While you are right about the general thesis of your post, Tesla and Musk case might be a more complicated case. Not only he is frequently delusional and has a huge appetite for risk, he is also known for manipulation of the markets.
I would approach this one with a lot of caution. Especially after the run up.
What amazed me yesterday is that 2017 loaded Model S vehicles that were selling for 50-70k USD just a couple years ago are now selling for 14-17k USD! They look like a bargain and if I were in the market for a car I would have considered one...