I truly believe e-bikes will be the future of transportation. What's holding them back is dumb legislation. In EU, they are limited to 25 km/h top speed and 250 W motors, which is not enough for everybody. Legislators think that if they are allowed to become more powerful then more people will die in accidents. True, but cars kill even more people so why don't we ban them? For fit people in good weather, 250 W is ple…
Of course, with higher top speeds you will probably want a windshield to protect the driver from bugs, debris, or precipitation. Hard to concentrate when you are getting hit in the face with stuff at 45 kph.
And really once the windshield is there, you should put a roof on too to provide better protection from the elements.
And a passenger seat or two. Maybe some storage. Maybe another wheel (or two) for better stability.
And then you have an e-car.