Rules:
-Make a map that is longer than 25 seconds.
-Contain flips after collide with an object (any type of flips, indeed barrel roll).
-A part of the map that let the car to reach above 110 KPH (68 MPH).
-Have a narrow and open space part.
-At least 1 checkpoint.
-Make sure that the map doesn't exist a shortcut. If does, the map would likely to be rejected.
-Have fun :)