Some very strange ones at this website. There's even a mention of one with non circular wheels. Here's the gyroscopic loco to start you off.
http://www.dself.dsl.pipex.com/MUSEUM/LOCOLOCO/brennan/brennan.htm

A funicular aka cliff railway has the cables underneath the car.
See the article on Wikipedia. http://en.wikipedia.org/wiki/Funicular

I think there's a little confusion in the two languages here. In 'British English' a 'cable car' is a gondola suspended by overhead cables as seen in the Brawa model. In 'US English' a 'cable car' is a tram (streetcar) hauled by a steel cable underneath the roadway. A 'trolley bus' in 'British English' is a rubber wheeled vehicle electrically powered by two overhead cables as seen here. http://www.trolleystop.com/tracklesstrolley.htm
  I hope that clears up any misunderstanding. :-)

Someone was asking almost the exact same question elsewhere. The answer given, by someone who tried it, was that his controller overloaded with loads of smoke!

On most US railroads with a 2 track line the train closest to you should run counterclockwise.
Not all do so check that the railroad you model does.

What make is it? Hornby, Airfix, Mainline or Rivarossi?

Grand Moff Tarkin (Peter Cushing) had an extensive collection.

Someone has already done it. Take a look at http://www.trainbuddy.com/Reference/decoding%20Engines/N440.htm where you will find full instructions with pictures. I shall be trying it on my Jupiter when I can pluck up the courage. :-)