05-11-2013, 06:42 PM
I'd have to say large scale due to less gravity. However, I'm not sure what sort of electrical contact problems you'd have with all that red dust on the rails!
![Big Grin Big Grin](https://bigbluetrains.com/images/smilies/biggrin.png)
Ed
"Friends don't let friends build Timesavers"
"Friends don't let friends build Timesavers"