You need two ramp trucks and a SUV then go to the beach and put the SUV on one of the ramp trucks.

Then make it so the ramps are facing each other, then get a partner to back up into the other ramp truck (person who wants driving XP has to be in SUV).

After your friend has backed up in to the ramp truck you will go flying up in the air and you can do as many flips as you like.

If you land in the water make sure you land on your wheels or you will not get the XP.