> people who cannot really ride bikes now get easy access to speed Let's say there was a speed restriction: if you go above, say, 15km/h, the electric assist t

> people who cannot really ride bikes now get easy access to speed Let's say there was a speed restriction: if you go above, say, 15km/h, the electric assist turns off and you have to pedal on your own. This would still be iffy in some situations, for example a busy combined cycle/footpath. Maybe it would work OK if the electric assist was some function of cyclist's own effort. The more power you put out, the more the electric motor adds on top. But you'd need some sort of a power meter and more complex controller, so would not be cheap any more...