Yes ROBO the monorail does operate. It runs every night from about 5:30 to 9:00pm weeknights and from 5:30 till about 10:30 on weekends. I built it in 1986, so it is in it's 19th. year. I refurbished it this year, (new paint ,stripes,fiberglass etc). It is a big hit with people of our town especially the kids (most call it a train).
The monorail works like slot car. There is a slot in the track with two wires on top and brushes on the monorail, it is powered by a car battery. The battery is under the Contempoary Hotel. The motor is from an electric four wheeler (Barbie Jeep), using two gears from the gear box. The wheels are from a hobby shop. The drive wheels are balloon tires from a model airplane, the others are solid rubber wheels. The motor last about two years and the battery has to be recharged everyday.
I hope this gives you some idea. If you want more information, I can get more specific with more detailed pictures.
Thanks