My trusty Trek 800 Antelope this weekend, fitted with $200 500W electric motor and an even cheaper fire hazard battery. I thought Spring was here, but it's still too chilly.
Followed by my latest project, a $150 Sundeal Minivello, fitted with a $200 250W front motor and $310 bottle battery. Seat upgrade too.
Both ridden at 12-14 mph. I find the Trek just rolls and rolls. When riding with my wife on her electric bike, I can often turn off my power and pedal along. I don't see that rolling ability on the mini. I have some new Kendas that night help.