Carena

The Arena is a massive colosseum designed as a place of final punishment and execution for lawbreakers. It's function is stated to be to decide whether a person is innocent or guilty, and then, iF the defendant is guilty, to kill them in the most epic way possible, preferably involving dinosaurs, cars, and explosions. Sally Acachalla was one such person accused of destroying a Waffle House. Sally accidentally pleaded guilty and was sentenced to death in "the arena of cars".