I watched another youtube video of a 1901 electric, all original except the batteries, and the motor which was in line with the rear axle still worked like a champ, in fact it had regenerative charging. by pulling the "throttle" into the reverse polarity position, it would charge the batteries on the downhill or serving as the brakes.
Many of the buses in Bogota where electric trolleys with overhead arms and brushes (much like the slot cars) which touched the live wires above.