It's hard to get any significant air, to be honest, which is why it's something to attempt.

There are some places where if you hit an obstacle or change in terrain JUST right it'll give you some amount of air and you'll begin to roll. Usually you just end up upside down and presumably dead.

One of the coolest things I ever saw in any racing game happened to me in FM3. I was hauling around through a turn and someone hit the (uhh... what're they called?) red/white things that are typically at turns and they were in a Koenigsegg going like 200MPH. It flipped them just as they were passing me, and the way I was going into the turn using the in-car view they flipped right over my hood in front of the windshield. I was terrified. Was so awesome though.

If the handling is anything like on GT5, then anything made by Dodge will handle like a dee-fried turd.

Also, you can get airborne in FH? Sheeyut, I managed to roll my Shelby Cobra once, but never managed flight...