I'll try and get the doors to stay open/closed using another method, and also animate.
They do not work on the wheel RPM. I could swap out my engine code like I said, and use the vehicle script from the thread, which I think has that all setup already. But doesn't it stop the engine audio then when the tires come off the ground? Sounds very odd then.
I'm not sure about the LOD stuff. I thought about that too. We would need to be able to force swap/override an LOD model in the script.
Although, in the engine case, specifically target an geomob. Maybe I can just hide/unhide the lower/higher poly engine?