@Jon
Nah, forgot about the real topic, now I want to commenting about off-topics regarding to your file.
I found some "bugs" on your buggy.
First, rear wheels should not turning like the front.
Second, rear and front wheels does not synchonized while rotating, I dunno if you intending these as "slip" or "spin" mode.
Third, pedal doesn't work on splitted axis.
Fourth, collider was
very very very slow and affecting overall performances.
Fifth, shapes still intersect when collides.
Sixth, nice car shapes.
Seventh, who's driving those cars? Ghosts? I couldn't saw any drivers.
I'll fix these problems and sent to you soon, especially for controller and collider codes. I think we can bypass collider routines from ode and use our own using bounding box instead, so each shapes won't be intersect.
In reality, doesn't matter who's
right but most important is who's
left.