You might look at the
Sinclair, but they never quite caught on. I wonder what would happen if it was basically reintroduced today, 30 years later.
I do think it is natural to combine pedals with a small EV, but it is also a fine line. If the total vehicle weight is less than 50 lbs, then the pedal assist makes a lot of sense. Say you exceed 200 or 300 lbs, then pedal assist becomes much less viable. And, it is apparently hard to keep the weight of a velomobile down.
It is so common to see mopeds, and throttle-type e-bikes being ridden on power only, or perhaps just using the pedals for short stop/start acceleration.
Electronic Assist pedalling makes a lot of sense to essentially force the rider/driver to provide at least some of the power.