I've rode a design similar to Lefty on the Mobike bike-sharing program in Germany (Dusseldorf, but they are around in many cities). The difference wasn't reall

I've rode a design similar to Lefty on the Mobike bike-sharing program in Germany (Dusseldorf, but they are around in many cities). The difference wasn't really noticeable (bike-share bikes are already hefty enough that this is a minor difference).