About 15 years ago I decided I wanted to design a little electric scooter that would have the potential to beat a Harley to 40 mph. I can tell you first hand those HD riders are not amused by a electric scooter taking them out. Etec motor with a peak hp of 25.7, 48 volt, 400 amp controller and (4) Odyssey PC-680 AGM batteries. Range was only 6.5 miles. I built this before lithium cells but now will probably swap out the lead acid AGMs for a bunch of 18650 cells which should save 50 lbs at the same range. This is my nephew and my dad in the background checking out the little monster. Had this scooter been a rodeo bull, it would have a perfect record, 5 friends/family tried to ride it, and even after a good preflight on the instant torque characteristics of an electric motor, all 5 lost control on take off.