My good friend who owns Maine Model Works in Falmouth, Maine builds a bunch of dioramas every year and for the last three years he has built one for me to use at the Fall and Winter shows where I display my trucks. Here's some photos of the diorama used at the Model Expo at Peabody.

The urethane stake body casting is 20 scale feet long and is cut off fit the truck you you're modeling. Stakes can be wood or styrene