Haven't tried to see if it will fit in the elevator yet, but the Xtracycle got the nod over the Big Dummy. It has the Bionx SL350 motor and 48V 8.8 Ah battery. What a cool bike and fun to ride. The bike is built well, with most everything well thought out and good quality. The crankset and peddles are low level, but all else is good.

It can use bigger than 48 tooth front chain ring, as I'm spinning too fast approaching 20 mph.

The motor is a blast!