Volatile stocks are horrible for people prone to buying high...

Volatile stocks are horrible for people prone to buying high and selling low, but if you could hold on for the long term. TSLA still has to do well but at least you will reap the benefits if it does.
TSLA's prospects don't entirely depend on self-driving. Watch the recent Investors Day presentation, most of it was about radically reducing costs while increasing quality and scale. Also check out Sandy Munro's videos, he's an engineer who consults with automobile manufacturers. He's famous for taking apart an early Model 3 and heavily criticizing it; now he raves about how far Tesla is ahead of other manufacturers. And it's not just the car business; they make as many battery cells as they can and sell the extras to power grids. They're even starting up their own lithium refinery.