Why? I needed to get some bike time yesterday, and didn't have the time to take the MTB to a park, so I just rode it around the neighborhood. I was catching up to a woman riding a bike around the neighborhood, it looked like she was coasting. I saw a red tail light blink on and off once, then she went back onto the road and sped up. Without pedaling. It was then that I heard the motor. I'm not sure what the point of riding a motorized bicycle like that is/was.