Re: Liability issues
The most straightfoward, easiest to maintain, requires little maintenance, is a rear friction drive. Owner must be able to comprehend tire wear, proper roller pressure against the tire, accelerated bicycle maintenance, and how water affects friction.
As for a benefit auction, I would want the end purchaser to understand that I am not liable for any "negative outcomes" resulting from a lack of proper maintenance on each and every part of the motorized bicycle. Also that is is a motorized vehicle of sorts and can cause injury to the operator slightly greater than what one may encounter riding a non motorized bicycle. Operator/ owner is solely responsible for their own actions and anything resulting from said actions.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."