I tried one of the bike share ebikes today and thoroughly enjoyed it. I have an older friend with bad knees who’s daughter has been encouraging to try one. They came over and we checked three of them out and rode streets, paths and a hill and all were enjoyable. These are pedal assist bikes. No throttle. There is a variable control that seems to affect gearing and the motor in some coordinated fashion. If you turn it towards the hill setting pedaling moves into higher gearing. Vice versus in the other direction and the motor seems to boost the assist for speed in the flats. The motor ceases to assist over 18mph. Fun ride.