Driving in 2 wheels is a trick you can do in the game to gain a bit more boost, which is the same trick Mater did in the first movie. To drive on 2 wheels, move the

up and you'll start driving on 2 wheels, it does make it a bit tricky to turn and you might get hit by items if you're playing on Battle Mode, but this achievement is cummulative, so you don't need to spend 15 minutes straight driving on 2 wheels, just do it whenever you can and you'll get the achievement.