TSLA-10K：
We hold and may acquire digital assets that may be subject to volatile market prices, impairment and unique risks of loss.
In January 2021, we updated our investment policy to provide us with more flexibility to further diversify and maximize returns on our cash that is not required to maintain adequate operating liquidity. As part of the policy, which was duly approved by the Audit Committee of our Board of Directors, we may invest a portion of such cash in certain alternative reserve assets including digital assets, gold bullion, gold exchange-traded funds and other assets as specified in the future. Thereafter, we invested an aggregate $1.50 billion in bitcoin under this policy and may acquire and hold digital assets from time to time or long-term. Moreover, we expect to begin accepting bitcoin as a form of payment for our products in the near future, subject to applicable laws and initially on a limited basis, which we may or may not liquidate upon receipt.
簡單來說就是因為不缺現金，為了追求多樣化和增進報酬，把部分現金拿去配置其他資產，其中 15 億美元買了比特幣，且未來可能把比特幣當成買特斯拉產品的支付選項。
ok 我算一下
電動車 check
太陽能 check
隧道技術 check
火箭技術 check
腦機技術 check
貨幣 check
離火星王距離越來越近。
https://www.sec.gov/Archives/edgar/data/0001318605/000156459021004599/tsla-10k_20201231.htm?fbclid=IwAR1F60Iz5naCYsoUT9UhYV0QSgAWzrxdt0rWnV7GJ_vPbr5BPJejNFTV1wo#ITEM_5_MARKET_FOR_REGISTRANTS_COMMON_EQU
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