Even the holy CG125 can't achieve 180mpg! [URL]http://www.ecycle.com/powersports/hybrid.htm[/URL] "Employing state-of-the-art mechanical and electrical design technology, eCycle is developing a 180mpg motorcycle. The motorcycle features a 219cc direct injected, multifuel engine (petrodiesel, biodiesel, kerosene) and an 8kW brushless motor drive. The weight is 230lbs, with a top speed of 80mph and acceleration of 0-60 mph in 6 seconds." Ok, so 6 seconds is VERY slow and in keeping with the car hybrids, it's also pig ugly, but the idea is sound.