So, if one were to make a small business of modding bikes (and trikes and recumbents) with gas or electric motors and tried to sell them, would this business actually make a profit?
Would an electric-modified bike appeal to anyone but backyard tinkerers and grannies? Would a low, ultra-fast (thanks to a motor) recumbent or chopper appeal to teens? Would someone with a 5-km commute ditch their car for a bike (at least on sunny days), if they didn't have to pedal as hard to get around?
What about the legalities of this? If a customer disconnected the battery while riding to see what would happen, and consequently did an endo because the motor locked up, could they sue the person who built the bike?
Do governments enforce any kind of certification on bike shops? How are bike shops protected if something goes wrong with a bike they sold/assembled?
You see what I'm getting at here, and I suppose my attempt at keeping this hypothetical has failed. However I'd still like to hear your opinions on these matters.