I live in Ireland, and own a class 3 e-bike. (That is, with motor assist up to 45kmph)
That’s legal here, though in practice power limits mean I don’t get above 35-38 kmph unless the wind is on my back. However, the law states that I cannot use the bike lane; I must take the car lane at all times.
I do that, of course, except when someone tries to run me off the road. I’ve been stopped twice by the police, though they weren’t sure what to do about me; one asked me to keep up with the traffic please. Right…
In practice I cause traffic jams every time I cycle to work, but on the bright side nobody is going to miss my existence.