Well, I love my motorized bike sooo much, that I bought another motor kit. (picture is in my album of my motorized bike if anyone is interested in looking at it)

I am going to make this bike out of a beach cruiser, with long handlebars, wavy frame lines, and lots of chrome. Those motors are so great on gas, the tank holds 1/2 gallon (2.5L) of gas, and I can go from home to work and back for 2 weeks on a tank. (assuming I'm not cruising or taking the senic route). To me, those motors look so cool in the frame like that, I've only seen assist motors for bikes that rub on your tire or use belts to drive. This one has a plate clutch, and chain drive.

It even has enough power to pull me up most hills around here without me assisting it. Of course, when I go trail riding, I usually have to help it out going up huge hills, but its a lot easier than doing it all myself