Dear Hitech,
I have a suggestion for the way GVs are simulated. The problem is that the faster you go in a GV, the less stable the steering becomes. If you go downhill in an M8, it's almost immpossible to keep the vehicle from rolling to the left or right at some point. One has to fight the steering constantly in order to keep the steering ocillations from increasing in amplitude.
In real cars, it was learned that keeping the steering pivot point in front of the tire's pivot point causes the steering wheel to naturally tend to pull back towards the center on its own if you move foward. If you go downhill in a real car (or push a shopping cart downhill, even), the real thing tends to go straight downhill by itself without the need for human input.
If you go downhill in the simulation, the steering starts to sway and oscillate. If the vehicle is turned so that the nose of the vehicle is going straight down the hill, the vehicle tends to pull to the side by itself.
I don't know if it would be very difficult to improve the realism of gv steering, but I hope you get a chance to address this problem and I appreciate the effort and quality you've already put into the simulation.
Barfo