The line between bikes and motor vehicles? I’m guessing the electric equivalent of a 50cc gas engine. While small scooters (under 50cc) would not be allowed on a bikepath, that is the cutoff between a motorbike that requires a motorcycle endorsement vs. one that does not. I had a Honda Elite 80 (loved it!) so technically if I had been pulled over, the police could have asked for the motorcycle endorsement on my drivers license.
Like that pinko Ron DeSantis!