I could've given you a brief answer to that one, though: FUN RIDE!
I've just made a little track with Stadium that can easily be driven and it feels really cute. I get part of it, it really is just a very different game. It's little rubber-speedy-toy-racing with adorable bounciness like it's all in a kind of trampoline fun-house. Kinda cool in a way. But the track has to really suite the car. Most maps I saw thus far were painful to wrestle through, more abrupt stopping and turning and weird choppy crawling from one impossibility to the next. Of course, might just be consistently bad luck on my part...even on the servers.
Canyon is slippery, lose and definitely fast enough. Stadium goes faster, but doesn't feel that way...until you try the same Stadium map in Canyon, hehe. Very strange how slow the canyon car goes in comparison.
Physics? Where? Hihihi...sorry, but those, of course, are fantasy physics. I have no idea what they were hoping to accomplish, but it's certainly a very liberal take on physics. I just now drove around on my head, which was kind of entertaining. The car flipped over and rocked around enough, I guess, so that the collision "proximity" (as opposed to detection) was convinced the tires had traction again and thus I could drive... on my head... upside down. LOL. Beta, maybe?!
Enough, enough, I know. Thanks for responding, for sure.