In rural areas one can do as they wish but within the city limits things get tight real quick. Go-peds are History here in SoCal because of inappropriatly dressed, loud piped, speeders, rampaging the locals. I do not wish to have the athorities in my town go after gasoline power assisted bicycles because of the type of contraption in the vids. No helmet, exposed flywheel fan, vice grips and the long hair comment was directed at a party animal attitude carried by most long haired head banger youngsters. I am not PC, I live in the real world and want to see a real acceptance of what this site represents. Call me an old crudmudgeon if you wish but my opinions gathered over 60 years of living won't change much.
Please read the Hurt Report summary, noting that most motorcycle accidents happen at under 29mph.
http://pages.cs.wisc.edu/~john/vfr/hurt.html
You guys that live in States that don't requior helmets...enjoy trying to recover from head injuries. Tain't fun to have those that love you watch the recovery, if it can even be called that. Gary Busey gives talks on head injury recovery. Google him if you think I lie.