Minneapolis Police Department found use of motors in 1909.  They were used up to the late 50's - early 60's.  We had some of the 3 wheeled motors towards the end of that time.  They were phased out and we didn't get motors again until a few years ago.

Minneapolis, MN Police Department

Minneapolis, MN Police Department

Minneapolis, MN Police Department

Minneapolis, MN Police Department

Minneapolis, MN Police Department

Minneapolis, MN Police Department