I got two 250 watt electric motors.
I got two 12 volt lawn tractor batteries
I got two 20" front bike wheels.
Let's build a trailer self contained. One we can bolt onto the rear wheel of any bike and have a power bike.
A simple on off switch for the handlebars is nothing. I have two household wall switches already we would only need one. We would probably need a couple of serious trailer tongues with slots cut in the like on the front of a bike. you know so we can just drop them down onto the axle bolt.
Motors to friction drive the trailer tires and push the bike ahead. Just a very minimum amount of pedaling. Good thing is they would be truly universal one size fits all.
Whadda say huh huh?