You guys don't remember when the 1982 Suzuki Katana came out:
http://www.motorcyclemuseum.org/classics/bike.asp?id=31. Everyone thought it was the ugliest thing ever. It was designed to look radical, and by 1982 standards, it was.
As for different engines, I remember when I was a teenager at the 1964-65 World's Fair in NY. Chrysler had a turbine car that they would run around a track:
http://www.motortrend.com/classic/fe...car/index.html. They said it could run on anything flammable, including Tequila. I liked to watch it go around for the sound it made. A whine that would put the gear whine of a VFR to shame. I think the problem was the extreme heat it put out.
And for a car that doesn't have to be refilled, you start with water, man, then you crack it with electricity to make hydrogen and oxygen. The engine runs on the hydrogen, makes electricity to crack the exhaust, which is water, and that is recycled back as the fuel.