I got to ride the the cit-e-bike a couple of times. The pedal throttle is very light, you can fall off the bike if you push hard on the pedal and the onslaught of sudden acceleration. On the first bike, it seems effortless to pedal up to around 18mph, but after that, the harder I pedal, the less assist I got, until what it seems to be full manual effort, still at 18mph, from there on, its 100% human power. The second bike, it tops out around the same speed at full assist, but I felt like I can go a little faster, still getting some assist, maybe going 20mph into a headwind (which is unimaginable in human power mode). If you look at my speed graph for the ride, its ruler flat in the 18-20mph range the whole ride. They both had Nuvinci hub properly set up so that I don't have to do 150rpm in order to maintain the 18-20mph speed.