Tesla was one of the 5 largest companies in the world - something an auto manufacturer hasn't been in almost 50 years.
Tesla had BY FAR the highest P/E ratio for any company of that market cap (as a percentage of global wealth) in history.
Tesla's revenue growth is not much bigger than Alphabet's or Apple's - and these are companies with orders of magnitude more revenue and profit.
For the last 50-ish years - outside of a few small companies (Ferrari, etc) - auto manufacturing has been a pretty terrible business.
Tesla people keep trying to say that Tesla is really an infrastructure play or an Internet company or a services companies or even a space company - but... currently it's not. And even if it became any of those things - even at it's current growth rate - its P/E to growth rate is still unbelievably high.
I don't really care if GM and Ford and Rivian are now overvalued - and compared to them Tesla is undervalued. Auto manufacturing is not suddenly going to become the most profitable business in the world. People aren't going to suddenly start paying more for cars than housing. People aren't going to suddenly own 30 cars a piece. Tesla is never going to grow enough to be worth it's current market cap. But the market can stay irrational longer than you can stay solvent - and I wouldn't take a bet that Tesla crashes if my life depended on it.