You can also get an electric assisted bike, or mod a bike to be electric assisted. A person near where I live runs a bike with two electric wheel hubs (front and back). The thing is virtually a motorcycle. He has no problems with the hills.
https://www.google.com/search?q=electric+bicycle+hub&ie=utf-8&oe=utf-8

Or you can run a electric motorcycle. – though the only problem I have seen there is that most of the electric motorcycles cost the same as a small car.
http://www.greencarreports.com/news/1101556_2016-electric-motorcycle-buyers-guide

though self powered bikes can help with strengthening for squats….