Four police cars are giving chase and drive into downed power lines. This causes the four police cars to all simultaneously do cannons, both traditional and endo flips. All of the car work was practical. To make it look like the cars were caught up in the fallen wires we set up two cannons and two flips with one drive into the end of a cable. We put cables on the nose of each car and each cable went back to a 1200lb K-rail. The cable length was calculated to grab the front of the cars as they were about half way into their flips. This would cause the cars to change direction abruptly so it looked like the wires were grabbing them. CGI was used to add telephone poles and wires.