Visible crew/equipment: In the closeup shots of the soda cans shooting out, you can very clearly see the the two hoses which are making the sodas shoot out.
Visible crew/equipment: In the scene where Curt and Connie are attempting to get into the truck stop, the beer truck is ramming their car after they are freed from it. The driver of the beer truck is visible for a few seconds.
Visible crew/equipment: When the trucks have been circling the diner for about 20 minutes, in a leading shot of the big green goblin head on what appears to be the main truck, you can see a light coloured car in said truck's shiny metal bumper, but there are just trucks in the circle of possessed vehicles. The truck in front of the green goblin head truck isn't that colour either.
Visible crew/equipment: When Deke is riding his bike down the street on the ground you can see the camera cars tire tracks. This is only visible in the wet parts of the street.
Visible crew/equipment: When the gunner is about to explode, you can see the incendiary device under the gunner.
Visible crew/equipment: During the ballpark scene, when the cans strike the coach they show a shot of the kids and there's a person in the background with a blue shirt standing there, then the cans attack the kids and he's walking around like nothing's happening. Obviously he's not supposed to be in the movie.
Visible crew/equipment: As Bill and the rest go back inside after the two trucks get blown up, the camera and cameraman are reflected in the door.
Visible crew/equipment: As the girl sneaks up on Bill as he's checking out the Happy Toyz truck, the lighting rig and equipment is reflected on the left brake light lens.
Visible crew/equipment: When Curtis and Connie are being chased by the driverless tow truck, as it first starts to try to get Curtis, you can faintly see a driver.
Answer: The Pinball Machine overloaded at speed.