alt Hacker NewsSee 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.
Failed startup isn’t a scam, to be a scam it needs to be presented in a way that is designed to collect money but that money be used for something else.
Otherwise YC would have been scam center, very few of YC companies don’t fail.