This was a experiment in physics, I wanted to build a train, got a little carried away and made Thomas the tank engine :) The problems to solve were to not only make a train...but make one you can ride on without the "getting stuck to a moving block cause the elevation changed" bug.

I solved it by making the trucks towed by Thomas ... tilt their bed and remain level when going up and down hill.... it worked, very little places you can get stuck on Thomas!

This map can be played on a full server fine, and is actually ...fun.

Here is a vid... 

enjoy