See my other comment [1]. There's dozen of failed products. That one AppGyver product is from 15 years ago. Since then, he hasn't created any other product. The motorcycle however is real. The battery may also be. The issue with Solid State Batteries is that it's almost impossible to scale them.

The guy changes the industry he's in as often to match what's currently popular.

[1] https://news.ycombinator.com/item?id=47129369