There is usually a ““Toy Truck and Construction”” convention in Indianapolis, Indiana during the month of August… At that convention, they usually have a large room set up for them to run their 1/16th radio controlled vehicles…
They have roads, bridges, and such set up… They don’t use dirt, but use crushed rubber bits that looks like coal and load it into dump trucks, with various type loaders… Move it to a different location and deliver the loads…
One year, they were doing a log of logging stuff, and had a G-scale train running log cars back and forth… They had done some scratch work on a bachmann 44 tonner, to make it look more like a 1/16th scale loco…
Was interesting to watch, all the lights worked on the vehicles… Dump trucks were run by hydraulics… The most interesting part was, when a hose would break, and the vehicle started spewing hydraulic fluid all over…