>> If you want to get on roads you need to sustain 50-60km/h

I'm sorry, but that's just not true - again, I used to cycle absolute loads(several thousand km a year) and "sustaining"(doing it for a long period of time without getting absolutely destroyed) 50km/h is extremely hard, you need to be a pretty good cyclist and on a good road bike.

And no, you don't need to be keeping up with traffic, in cities or otherwise. Don't see why you think you should.

Context is ebike, not by foot.

I had bike that could do 50km/h and it was just a bit too slow. You wanna be comfortable overtaking cars, not just be squished in-between.

That's an electric motorbike. Get it registered and with road rated hydraulic disc brakes, wheels, and suspension and wear road rated safety gear. It doesn't belong on separated bikeways with children and mixed use paths with babies and dogs.

An ebike is for the same roles as a human powered bikes, and no human can consistently move at speeds that are comfortable for overtaking cars on the flat or uphill.

Escooters, if anything, should be even slower as their geometry makes emergency braking impossible, but a 25km/h, 250W limit for everything is an acceptable compromise to reduce regulatory burden.

If you want a stand up scooter that produces kilowatts and does 90, then it's also an electric motorbike (or motor scooter/moped where that's a category) and should be held to the same safety standards.

I think you missed my og post. These bikes are capable doing such speeds, but no one sells them because regulation