I know a few of the folks from LNUR, the LEGO Northern UK Railway LUG, and was recently invited to take part in their podcast about different scales of LEGO trains. I talked about my Microscale trains and trams, and also my custom Monorail train, which is 4-studs wide. Here is the podcast if you would like to listen:
Here is a compliation of trains and Great Ball Contraption models which were on display at Bressingham Bricks recently. Enjoy.