text: First off dubbed LIDAR in every car would reduce car crashes, in my opinion. Many lives can be saved. Its a special sensor which is located on the roof of the car, this sensor spins. Also it constantly updates a map of all the car's surroundings. This is done by laser beams. With this sensor the car will be aware of everything that is going on around it, reducing the chances it'll crash into something or someone. Nonetheless sensors have been around for quite some time.