“Ketones are normal gasoline” is a very fringe view.

Ketone supplements have been available for a while, and nobody was able to show any benefit of using them. 100% snake oil.

If on the other hand you want to produce ketones endogenously, you basically have to put your body in a state of starvation. It’s not really gasoline then, more like burning the passenger seats as fuel so you can arrive at the destination.