the kid in the game that owns this huge house and set up all these tracks discovered a new dimension and immeditatly thought "i could set up an AWESOME track here!"
I believe you have to do a wheelie with the front and back wheels of either side. Start doing a barrel roll, and about 1/3 into it, stop. It should land on those two wheels closest to the ground. Stay on it for a bit and you should get the car.