Cam Green's Maine Central circa 1980 HO layout models Maine, centered around the area of Yarmouth and Augusta. The layout is 28 feet by 48 feet in an L shape and located in a finished basement. It uses Digitrax DCC as the command system.
Sean Hoyden's Dominion Southern is a proto - freelance, multilevel HO housed in a 40 foot by 40 foot multi-purpose building and is under construction, using TCS DCC as the command system. It is set in the modern era from the early 2000's to today AND he has the Norfolk Southern "B" line that passes by his back yard.