CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 1,161,362	$ 217,734
Restricted cash	27,961	1,853
Accounts receivable, net of allowance of $789 and $1,809, respectively	33,799	30,848
Inventory	299,411	205,746
Prepaid expenses and other current assets	16,257	9,149
Total current assets	1,538,790	465,330
Property and equipment, net	10,051	7,828
Intangible assets, net	160	572
Goodwill	78,172	78,172
Operating lease right-of-use assets	14,337
Other assets	13,433	11,485
Total assets	1,654,943	563,387
Current Liabilities:
Accounts payable	29,630	18,987
Accrued expenses	47,641	38,491
Vehicle floorplan	248,967	173,461
Deferred revenue	17,299	17,323
Operating lease liabilities, current	4,621
Other current liabilities	16,375	11,572
Total current liabilities	364,533	259,834
Operating lease liabilities, excluding current portion	10,674
Other long-term liabilities	1,886	3,073
Total liabilities	377,093	262,907
Commitments and contingencies (Note 8)
Redeemable convertible preferred stock, $0.001 par value; 86,123,364 and 10,000,000 shares authorized as of December 31, 2019 and September 30, 2020, respectively; 83,568,628 and zero shares issued and outstanding as of December 31, 2019 and September 30, 2020, respectively		874,332
Stockholders’ (deficit) equity:
Common stock, $0.001 par value; 113,443,854 and 500,000,000 shares authorized as of December 31, 2019 and September 30, 2020, respectively; 8,650,922 and 130,230,591 shares issued and outstanding as of December 31, 2019 and September 30, 2020, respectively	130	8
Additional paid-in-capital	1,994,929
Accumulated deficit	(717,209)	(573,860)
Total stockholders’ (deficit) equity	1,277,850	(573,852)
Total liabilities, redeemable convertible preferred stock and stockholders’ (deficit) equity	$ 1,654,943	$ 563,387