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.