I was a bit disappointed with the rigs that just stick the wheels to the ground. It made the vehicle look like it was glued to the ground. I wanted to create something that made the vehicle struggle through the terrain like in real life. I decided to dig deep into Blender and create my own physically based rig (animation PBR! :D) which simulates bouncing, tire stiffness, 4 link axle etc...
Vehicle Rig Test 1