Especially e-bikes are gaining a lot of momentum. They take away the sweat factor of regular bikes while still having massive health and congestion advantages over car commutes (and within the city are often faster than cars due to congested streets).
In the EU ebikes are quite limited. If you're going to hurt yourself at 17mph on an ebike a normal bike isn't going to safe either, as soon as you go down a hill. American ebikes seem to be crazy powerful.