Hello,
My friend and I were messing around on the race track (in a private game so we don’t disturb anyone else), and we noticed a few spots where you can ‘climb’ up certain places and leave the track. This has made for some humerous screenshots, hopefully shown below.
It’s a bit late for me now timezone-wise, but I can make a video demonstrating how these can be reproduced and send the link here. For now, I can share the screenshots made possible due to these ‘climbable’ areas.
These aren’t really possible during a normal game since some of the movement required is fairly precise. But if you know what to do you can find yourself leaving with relative ease. We have found our way onto the other track, but won’t share screenshots here in case it’s a secret for now. 
Hope this is somewhat helpful.
