I'm still putting in hours on these vehicles...it's worth it though...I now have a fully simulated gear gox, transmission, drivetrain, engine, and brakes on all of the cars. Right now I'm just using a linear torque curve with the maximum torque value for each vehicle to look up the torque at each RPM...simulating the actual torque curves of each vehicle is a little out of the scope of this game ;-).

I'm plugging in realistic values for the mass, max torque, redline, differential and the gear ratios, so the cars accelerate through the gears very realisticly. I've got 3 different drivetrains simulated (4 wheel drive, Front wheel drive, rear wheel drive). I use all this to figure the exact torque values to plug into Newton, it really works out great. Here's a image of how the cars are looking so far...I'll have more pictures soon, and a video showing a car chase hopefully...

- Dan