Well, I had an idea that I thought I should share. There is a cannon in-game, and propane tank explosions work, so why not make a bit of a combination of the two? Some kind of missile or rocket that is fired from some type of launcher, like a missile launcher truck. A simple J-beam tube with fins for stability and a thruster for propulsion. On the end could be a compressed J-beam, or whatever other tricks are used to create an explosion. Maybe even a rudimentary steering system? Something that is simple enough to allow for 4 or 6 of them to be launched in a row without slowing down the game. Perhaps the distance away from a target before detonation could be adjustable in the tuning menu, using a single node sticking off the nose, when it touches a surface, the charge goes off. The distance of this node from the nose could be altered. Maybe not a good idea, but it sure would be good in the BeamNG.drive trailer, and imagine the fun of launching a salvo of missiles at a car? Eventually, a self guiding feature could be created, and the missile could somehow have heat seeking abilities. I don't know if any of this is possible right now, but at the very least, this idea can give you a good laugh.
It would be good and might work. A basic design could be made with the propane tank with a thruster added to it and jbeam fins