I built an electric for the daily commuter bike.
I got tired of the:
dress to ride,
ride to work,
shower
dress for work
change to ride home
ride home
shower
change
etc etc.
Now i ride in my dockers and pass roadies while climbing the hills each way.
I built it stealth, so it looks like a beater mtb with 2.5" slicks.
A big question mark floats above their head when i pedal past them in my dockers and work shirt. LoL
BTW..It goes better than 20mph and has 50+ mile range.