a guy actually built a engine that every third shot of fuel was water probably horrible for the engine but good to cool down your engine and get better gas millage
part of the problem is all the requirements. u have to put air bags in, ok up the horses on the engine to take the weight u have to only let out 3% gas out of the exhaust, ok up the horses on the engine to take the restriction, they must be better frames, ok up the horses on the engine to take the weight
then u wonder y we get crappy millage and all those small cars cars r not safe at the speeds we like to drive.
last random incoherent rant on the concept of being better than the Jones. every one has it, here it's i wanna get a better,faster,rarer bike and to me i have a bike, one of 2 at our high school. the other guys is way nicer but he's a senior and that thing is like his car