I think the reason why Tesla is valued highly is that they won't stop growing at 1M vehicle production rate. (Whereas GM and others like it are stagnating or even declining in vehicle production:
https://www.statista.com/statistics/225326/amount-of-cars-so... )
They're selling mostly cars in their home market which is dominated by trucks and crossovers. They have a mass market crossover coming to market this year and a truck soon after. Overseas, they just built their first new factory in the biggest EV market in the world (China) that seems to already be doing well, and they're already starting to clear land on their European factory (whose market ought to be bigger than the North American market as well).
The wild card is climate action. If the world has to severely cut back on fossil fuels, electric vehicles will be enormous, and Tesla's are the most compelling by a large margin, in spite of several attempts by large carmakers. There's also the storage market, the solar roof market (granted, mostly a California thing for now for Tesla), grid storage market (fairly large and likely to get much larger if climate action becomes critical), and the Semi truck (which is MUCH more compelling than other electric trucks, by an even larger margin than, say, the X is versus the e-tron).
So I think long-term they have a decent chance of producing millions of vehicles and with significant revenue from non-passenger-vehicles like grid storage and long-haul trucking. If there's a 50:50 chance of global climate mobilization, that's a 50:50 chance of market conditions basically perfect for Tesla... and even without that (as in right now), they seem to be capable of being marginally profitable and still growing. So the upside is high and the downside is low.
I haven't mentioned autopilot or self-driving because I think the case for Tesla's value is strong without that more questionable argument.
I hold no individual stock.