What do you think of this as a plot? (Well, a small part of the plot)
Test Track - They meet up outside the attraction and head on in. The ride is constantly kept on for 20 or more hours, because it take 2 hours to start up, so the ride was still running when they got there. They studied every tire as they went through, including the wheels on the vehicles themselves. They didn't put their seatbelts on, in case they spot it, so they can get out quickly. As they turn towards the crash test, a loud crash is heard. They see that the car in front of them has crashed into metal doors that usually open. The sensor hadn't worked and the car didn't slow down. They tried to get out of the ride, but their seatbelts snaked around them tightly and wouldn't budge. The car started running towards the door. Charlene throws her shoe in front of them onto the track, and the vehicle abruptly stops, because it tripped another sensor that if anything gets onto the track, then the car stops. They manage to get the seatbelts off and walk off towards an emergency exit. They enter the gift shop, disappointed that they couldn't find the piece, when Willa notices that the Test Track car displayed in the gift shop has an odd wheel. She examines it and finds it has the Epcot logo on it, meaning it's the part they're looking for. They go into the storage room, place it in there and leave, but didn't realised they were followed. The Overtaker can't get into room though, as if it's protected.