Although I think this is a great game, it be nice to have different physics behavior for different kinds of materials, like the d15 flatbed (wood braking ecx. not bending), and plastic (looks wierd sometimes in a crash when it bends like metle). Some parts also woble around like there made of jello. Also it would be nice to have a breakible environment, (like when you crash into a small tree, shrub)
The way the engine and everything is designed it isn't really possible to have wood and plastic break properly which is partially why the cars in the game are mostly normalish cars from the 70-90 because they have less plastic than modern cars. And if breakable trees ever become a thing they would probably work similar to the street light prop.
So just have to wait for beamng 2 , Unless they do heavy modifications to the physics engine in later releases.