Is that market cap or earnings? The market cap is the meme part. If TSLA had the P/E ratio of MSFT, shares would be worth $24.
Market cap. If it had the P/E of MSFT, it would still be 140x bigger than the smallest S&P500 component.
Tesla also doesn't have the margins or growth rates of software companies. Top automakers in the world all have a p/e of around 5-10. Microsoft is 26. Tesla is 320.