Deposits and Other Current Assets - Deposits and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits:
Deposits for research and development, prototype parts, and other	$ 41,841	$ 6,412
Deposits for “Future Work”	8,380	0
Total deposits	50,221	6,412
Other current assets:
Prepaid expenses	11,489	762
Other current assets	1,757	3,364
Notes receivable	0	40
Due from affiliate	0	2,034
Total other current assets	$ 13,246	$ 6,200

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Deposit For Future Work

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Notes Receivable, Current

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Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter.

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Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due within 1 year (or 1 business cycle).

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Amount of current assets classified as other.

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Amount of other miscellaneous assets.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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