SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 13G

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO RULE 13d-2

(Amendment No.     )*

CARMAX, INC.

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

143130102

(CUSIP Number)

December 31, 2007

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

x Rule 13d-1 (b)

¨ Rule 13d-1 (c)

¨ Rule 13d-1 (d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes.)

CUSIP No. 143130102 13G Page 2 of 10 Pages

1	NAME OF REPORTING PERSONS             Warren E. Buffett
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See instructions) (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             United States Citizen

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not Applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6%
12	TYPE OF REPORTING PERSON (See instructions)             IN, HC

CUSIP No. 143130102 13G Page 3 of 10 Pages

1	NAME OF REPORTING PERSONS             Berkshire Hathaway Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See instructions) (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             State of Delaware

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6%
12	TYPE OF REPORTING PERSON (See instructions)             HC, CO

CUSIP No. 143130102 13G Page 4 of 10 Pages

1	NAME OF REPORTING PERSONS             OBH, Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See instructions) (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             State of Delaware

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6%
12	TYPE OF REPORTING PERSON (See instructions)             HC, CO

CUSIP No. 143130102 13G Page 5 of 10 Pages

1	NAME OF REPORTING PERSONS             National Indemnity Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See instructions) (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             State of Nebraska

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6
12	TYPE OF REPORTING PERSON (See instructions)             IC, CO

CUSIP No. 143130102 13G Page 6 of 10 Pages

1	NAME OF REPORTING PERSONS             GEICO Corporation
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See instructions) (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             State of Delaware

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6%
12	TYPE OF REPORTING PERSON (See instructions)             HC, CO

CUSIP No. 143130102 13G Page 7 of 10 Pages

1	NAME OF REPORTING PERSONS             Government Employees Insurance Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a)  x (b)  ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION             State of Maryland

NUMBER OF   SHARES   BENEFICIALLY   OWNED BY   EACH   REPORTING   PERSON   WITH	5    SOLE VOTING POWER             NONE
	6    SHARED VOTING POWER             21,000,000
	7    SOLE DISPOSITIVE POWER             NONE
	8    SHARED DISPOSITIVE POWER             21,000,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON             21,000,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See instructions)             Not applicable.	¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9             9.6%
12	TYPE OF REPORTING PERSON (See instructions)             IC, CO

SCHEDULE 13G Page 8 of 10 Pages

Item 1.	(a)	Name of Issuer:
		CarMax, Inc.
	(b)	Address of Issuer’s Principal Executive Offices:
		12800 Tuckahoe Creek Parkway Richmond, Virginia 23238
Item 2(a).	Name of Person Filing:
Item 2(b).	Address of Principal Business Office:
Item 2(c).	Citizenship:
		Warren E. Buffett 1440 Kiewit Plaza Omaha, Nebraska 68131 United States Citizen
		Berkshire Hathaway Inc. 1440 Kiewit Plaza Omaha, Nebraska 68131 Delaware corporation
		OBH, Inc. 1440 Kiewit Plaza Omaha, Nebraska 68131 Delaware corporation
		National Indemnity Company 3024 Harney Street Omaha, Nebraska 68131 Nebraska corporation
		GEICO Corporation 1 Geico Plaza Washington, D.C. 20076 Delaware corporation
		Government Employees Insurance Company 1 Geico Plaza Washington, D.C. 20076 Maryland corporation
	(d)	Title of Class of Securities:
		Common Stock
	(e)	CUSIP Number:
		143130102
Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
	Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.), Berkshire Hathaway Inc., OBH, Inc., and GEICO Corporation are each a Parent Holding Company or Control Person, in accordance with §240.13d-1(b)(1)(ii)(G). National Indemnity Company and Government Employees Insurance Company are each an Insurance Company as defined in section 3(a)(19) of the Act. The Reporting Persons together are a Group in accordance with §240.13d-1(b)(1)(ii)(J).
Item 4.	Ownership.
	Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
	(a)	Amount beneficially owned:
		See the Cover Pages for each of the Reporting Persons.

Page 9 of 10 Pages

	(b)	Percent of class:
		See the Cover Pages for each of the Reporting Persons.
	(c)	Number of shares as to which such person has:
		(i)	sole power to vote or to direct the vote
		(ii)	shared power to vote or to direct the vote
		(iii)	sole power to dispose or to direct the disposition of
		(iv)	shared power to dispose or to direct the disposition of
		See the Cover Pages for each of the Reporting Persons.
Item 5.	Ownership of Five Percent or Less of a Class.
	Not Applicable.
Item 6.	Ownership of More than Five Percent on Behalf of Another Person.
	Not Applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	See Exhibit A.
Item 8.	Identification and Classification of Members of the Group.
	See Exhibit A.
Item 9.	Notice of Dissolution of Group.
	Not Applicable.
Item 10.	Certification.
	By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Page 10 of 10 Pages

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

February 14, 2008	February 14, 2008
Date	Date
/s/ Warren E. Buffett	/s/ Warren E. Buffett
Signature	Signature
Warren E. Buffett	Warren E. Buffett, Chairman of the Board
Name	Name/Title
	Berkshire Hathaway Inc.
February 14, 2008	February 14, 2008
Date	Date
/s/ Warren E. Buffett	/s/ Marc D. Hamburg
Signature	Signature
Warren E. Buffett, Chairman of the Board	Marc D. Hamburg, Chairman of the Board
Name/Title	Name/Title
OBH, INC.	National Indemnity Company
February 14, 2008	February 14, 2008
Date	Date
/s/ Warren E. Buffett	/s/ Olza M. Nicely
Signature	Signature
Warren E. Buffett, Chairman of the Board	Olza M. Nicely, Chairman of the Board
Name/Title	Name/Title
GEICO Corporation	Government Employees Insurance Company

SCHEDULE 13G

EXHIBIT A

RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP

PARENT HOLDING COMPANIES OR CONTROL PERSONS:

Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.)

Berkshire Hathaway Inc.

OBH, Inc.

GEICO Corporation

INSURANCE COMPANIES AS DEFINED IN SECTION 3(a)(19) OF THE ACT:

National Indemnity Company

Government Employees Insurance Company

SCHEDULE 13G

EXHIBIT B

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G in connection with their beneficial ownership of the Common Stock of CarMax, Inc.

Dated: February 14, 2008	/s/ Warren E. Buffett
	Warren E. Buffett
	Berkshire Hathaway Inc.
Dated: February 14, 2008	/s/ Warren E. Buffett
	By: Warren E. Buffett
	Title: Chairman of the Board
	OBH, Inc.
Dated: February 14, 2008	/s/ Warren E. Buffett
	By: Warren E. Buffett
	Title: Chairman of the Board
	National Indemnity Company
Dated: February 14, 2008	/s/ Marc D. Hamburg
	By: Marc D. Hamburg
	Title: Chairman of the Board
	GEICO Corporation
Dated: February 14, 2008
	/s/ Warren E. Buffett
	By: Warren E. Buffett
	Title: Chairman of the Board
	Government Employees Insurance Company
Dated: February 14, 2008	/s/ Olza M. Nicely
	By: Olza M. Nicely
	Title: Chairman of the Board