Mine isn't a very good example but there is a very big scene of guys that build 'scale' RC Trucks where the focus is on realistic performance and appearance.
The chassis's are based on frame rails with center transfer cases, leaf springs, solid axles, three speed gearboxes etc etc. Lots of guys scratch build their chassis from brass, its all very impressive.
Example complete with scale rust -
They are usually very heavy so look very realistic in action.
Duane B