Sweetness. Sure beats the MPG of a Prius, and is cleaner to boot. My only wonder is about its performance - but for many, it would not matter. Being a car nut, I would probably not drive one unless it outperformed or at least matched any other similar quality car in its price range, but I'm too picky. Anyways, the gasoline engine was pretty slow itself when it started out. (The first gasoline automobile had a top speed of 9 mph
)