A Barrier Breaker in the Crackdown 2 Demo
1. Have a friend join your game.
2. Find a car and a wall.
3. place the car next to the wall and have your friend get between the car and the wall.
4. Make sure it gives him the option to take the car from you.
5. Tell him to take it from you.
6. As he is taking you out drive the car into the wall.
7. You should go through the wall.