I just recently watched a 4-hour longplay of ATV Quad Power Racing 2 on the Xbox. I wondered, how did they achieve the physics on the quad bikes? Because after analyzing moments in the video where the quad bike landed after a long jump, bicycled, or crashed It seems to me that the wheels are "physical" rather than simply raycasted/shapecasted. I have two hypothesis:

1. The quad is entirely kinematic. The physics acted upon it are simulated through the animation.

2. The quad has a different physics body for collisions and a different one for driving.

So, how could have they achieved such physics in the game?

Nevermind, I think the answer would be the second hypothesis. I'll test that out.