One of the highlights of the 2015 Calgary Supertrain was a 36 inch circular On30 layout by Tom Beaton (along with his amazing logging modelling in a milk can and sonotube). More photos and info on my blog at http://cprailmmsub.blogspot.ca/2015/04/calgary-supertrain-2015-more-great.html
John Longhurst, Winnipeg