Great for hills but yesterday I simply breezed past one doing 17mph.
(18mph currently with 66 gear inches is my max flat no wind speed).
In the UK the law says the electric assist on an electric bike should shut
off by 15 mph, fine for hills, going up them or down, but on the flat ?
It was a no contest, on the flat the electric bikes not even geared
to do 15mph on its own (fair enough matching to the law) and it
probably pans out its simply not worth trying to go fast as the
assist shuts off, you are stuck with bimbling along or pedalling
like a demon on a bike with ~ 46 gear inches and a lot of weight.
Electric bikes need to be a lot more fun than that ....