Instructions
Start driving along the road on which you want to perform the Showtime Road Rules event. Activate your boost by holding down either the "A" button or "RT" trigger depending on your controller configuration.
Wait until you see a lot of traffic and hold down both the left trigger ("LT") and right trigger ("RT") simultaneously. This will start Showtime mode. If you start Showtime mode without much traffic on the road, you will not score as highly.
Release "LT" and "RT," and steer your vehicle through the traffic. Try to hit as many cars as you can. The more cars you hit, the more points you will score. Showtime mode will end when your car stops moving.