Here is how to do a new barrier breaker for crackdown 2. Just stand against a wall and have a friend in a supercar drive into you pushing you through. You can try it with other cars but the supercar works best. This was done in Crackdown 2 on Xbox 360.
This was found by Team LAG.
You can do this glitch with ANY agency vehicle. Sometimes the cars have missing doors roofs etc. For some reason you can’t do it on co op.
1. Take the car through the first tunnel (Los Muertos)
2.Drive out and land the car in the ocean. (it can be anywhere in the ocean but this is the closest)
3. Get on top of your car and jump as high as you can, while in the air throw enough grenades so you kill youself instantly.
4. After the grenades are thrown and before you die, tap the A button as fast as you can. You should lag for a moment.
5. At the menu, select the agency and then the keep, you should feel a vibration for half a second when the loading screen appears.
6. Go straight to the agency vehicle that you selected before and the wheels should be invisable.
7. If this doesn’t work, close the door and open it again. If that still doesn’t work then try the glitch again.
IMPORTANT: this doesn’t always work on the first try so you should be patient.
This video demonstrates a strange re-spawning of a vehicle glitch in Crackdown an Xbox 360 game. Also shows an excellent way of building up a stockpile of vehicles to destroy.