I say a Little one because it is just that. basically you want to add more triggers such as openable engine bay door and a "drivers" door button on the side of the front which you have to lift a flap to acess, press a button and the front doors open. Optional: connect the air breaks, install air pressure buildup motor and tank so we can abuse teh breaks properly. I haven't seen a light switch for the saloon lights, that would be nice as well. Optional 2: introduction of a manual gearbox system. Fixing 1 sound bug: Basically with the bus if you are inside at the driver's desk, the sound volume is cut back by at leas 80% which is wrong, should be hearing the engine there as well.