In Sacramento, California, two motorists attempt to out-threaten each other over an alleged tailgating incident. In Las Vegas, Nevada, a driver upset at being allegedly cut off confronts another motorist at a stoplight. In Plano, Texas, a motorcyclist gets physical with a man washing his car during a heated discussion about the biker's speed. In Chicago, Illinois, a man appears to throw a rock at a passing car and pays a heavy price. On a Florida Highway, an alleged tailgating situation leads to shots fired on the road. In Olympia, Washington, a motorcyclist trying to avoid a collision ends up on the trunk of a moving sedan. On a highway in Texas, a box truck swerves into a semi's path and causes a massive collision. In Florida, a father and son watch as a train hits a watermelon truck.