Thanks !
Didn't have enough time left to make more levels so I thought I'd at least try to make the one I got feel good.
Yeah you're completely right the physics interactions are hard to read, the truck is entirely animated by hand and only updates on the normal tick update, not on the physics tick, I tried doing some interpolation but without writing a proper way to animate directly in the physics update I couldn't get it better.
Let's just say the jaggedness is the difficulty factor to artificially lengthen the level's duration haha :x