3 wheelers are a whole different thing - many just put a front wheel friction drive on to save all the work of frame mounting, but friction won't usually pull a steep hill
many places where you must stay in the bike lane are difficult for 3 wheelers to fit in
a lot depends on how the frame is made & where you live, but making a turn on a 3 wheeler at 30mph can be very exciting at times too
many places where you must stay in the bike lane are difficult for 3 wheelers to fit in
a lot depends on how the frame is made & where you live, but making a turn on a 3 wheeler at 30mph can be very exciting at times too