Nice to show how these parts work in real life, but definitely too complex. Too much unnecessary details, parts and animations. They will consume precious FPS and your bus will be unplayable on most of OMSI maps. I'd prefer well optimized bus, rather than over-detailed. It would be better if you concentrate your work on cockpit and good textures. That's what most of OMSI users need, rather than parts that nobody sees during driving.

Edit: Oh, demonstration purposes only. Ok then.