Thanks :) Even did a good job getting into Blender throughout the jam.
You are spot on! We spent a lot of time trying to tune it, but we were not able to get it down. I think the main issues are that it turns to hard and that we apply too much engine force on the wheels, thus losing grip / contact with the ground. We are gonna check if adding controller support can remedy it, but I do believe that a different approach will be more manageable for us than trying to tame the physics engine. Thanks for the advice!