I'm looking to go with the hub because the military base that I work at does not allow electric scooters or mini bikes. I figure as long as I cut power through the gates that I pass through I will remain in many peoples eyes as a bicycle. I have read the instruction and the only problem I see is that while the definitions of electric scooters and motor cycles clearly do not fit what an electric bicycle is, the instruction does say that a bicycle is a device that is less than 4 wheels and is solely human powered. I actually think there is another category I could fall under: Low Speed vehicle, except that it uses a four wheel definition, under 20 mph. The laws of my state treat electric bikes as bikes if under 20 mph, and the military instruction says to follow state laws where ever practical. Its an issue I do not want to address as I am SURE I WILL if I go with a motor other than hub.