Radiator Springs Racers is a slot car ride in Cars Land at Disney California Adventure. The attraction features a third-generation version of transport technology originally developed for the Test Track attraction at Epcot in Walt Disney World. Radiator Springs Racers is themed to the fictional world in Disney Pixar's Cars. At a cost of over $200 million, the attraction is the most expensive at Disneyland Resort and one of the most expensive theme park attractions in the world.