Consolidated Condensed Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 501.7	$ 464.6
Restricted cash	6.7	6.9
Prepaid expenses	11.0	7.9
Other current assets	3.6	0.8
Total current assets	523.0	480.2
Property and equipment, net	113.1	57.6
Intangible assets, net	0.4	0.4
Right-of-use assets	7.4	8.9
Other long-term assets	7.6	7.2
Total assets	651.5	554.3
Current liabilities
Accounts payable	23.5	14.3
Current portion of lease liabilities	3.6	2.8
Accrued expenses and other current liabilities	59.6	96.9
Total current liabilities	86.7	114.0
Notes payable	64.0	7.2
Lease liabilities, net of current portion	10.9	13.2
Warrant liabilities	9.6	39.9
Other long-term liabilities	12.6	12.9
Total liabilities	183.8	187.2
Commitments and contingencies (Note 7)
Stockholders’ equity
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of September 30, 2024 and December 31, 2023	0.0	0.0
Additional paid-in capital	1,955.3	1,515.9
Accumulated deficit	(1,487.5)	(1,148.8)
Accumulated other comprehensive loss	(0.1)	0.0
Total stockholders’ equity	467.7	367.1
Total liabilities and stockholders’ equity	651.5	554.3
Class A
Stockholders’ equity
Common stock	0.0	0.0
Class B
Stockholders’ equity
Common stock	$ 0.0	$ 0.0