It seems that Elon Musk have over-promised and under-delivered repeatedly, including about Tesla; the market acted like it believed that everything he announced was going to happen.
I would not be surprised if the majority of what he said was magical thinking.
Given the actual business performance of Tesla compared to other automakers, what do you believe the stock value should be?
I never tried a Tesla, but I've seen contradicting reports about the build quality and customer satisfaction, I think this is a relatively important heuristic to evaluate the potential of any consumer product.