You bring a good point, they are not only a car maker, they are also the distributor and the gas stations and they are the best in electric vehicle in all 3 categories. They are also starting to become the best in solar electricity and thus may also produce the "fuel" of their cars.

That's not only being the GM of electric vehicle, they are much bigger than that.

I'm pretty sure they are overvalued right now because what they do is for the greater good, but they are also much bigger than what shorter want us to believe.