text: Most robotic things are quick, but they are not quick enough to react to something happening in half a second. If a driverless car were setup to react to an incoming car, it would just try to swerve around the car. If the car just swerves and there is another car on the left or right of it, the car would then hit one of those. If the driverless car just breaks to avoid hitting a car in front of it, and the car behind it does not have enough time to react and crashes into him. These cars would cause more damage by being programmed to, quote on quote,"React to an incoming car."