I hate to potentially cause unnecessary speculation, but have a look at this photo: (Source: Rayson95 on TT) Is it me or does the wheel assembly look, well not normal? It might just be because the yellow wheel covers do not seem to be attached. Or it could be the way the photo is taken. Something just doesn't look quite right though. It appears the photo was taken from the Spinball queue, with the truck heading away from The Smiler (presumably over towards the Magic HQ and Distribution Centre area).