Busroutes: Less pay for smaller busses/vans

[Medek]

+1, the system should take in consideration various busses, they can have a huge difference in speed between each other, Gruz runner being the quickest ofc, but for the system they're all the same. Just looking at the Power-weight ratio quickly tells which busses are better suited for the job currently, and nothing comes anywhere close to the Gruz Runner. I would even argue it maybe shouldn't even be considered as a bus, but then it also could be argued that not every map/route is suited for bigger busses (even though it's possible to do bus jobs on South City just fine even with a Karobus, but it slows down traffic a lot because usually need to take up 2 lanes to take a turn)