So I already have a car in the Blender game engine. It drives fine (suspension brakes etc.) However, for some reason it doesn't drive in reverse. If I press the down key quickly, it moves back a bit and just rolls, but it doesn't have constant acceleration backwards. If needed, I have uploaded the code and the .blend file.
I think that it is to do with the brake being activated when the reverse key is pressed as the reverse key is used as a brake and to reverse.