Its called the Grappler, a tool used by police to safely end high-speed chases by deploying a net that wraps around a fleeing vehicle's rear tire. It is mounted on the front of a police car and, when deployed, causes the tire to get entangled, bringing the vehicle to a controlled stop without the need for dangerous maneuvers like the PIT maneuver or stop sticks. google.com/search?q=new+saft…