Um, I'm pretty sure the picture is caused by the distance from the camera to lens with a wide lens, probably something 20mm or wider lens on an 35mm sensor. Its WIDE, WIDE (if I could make that bigger I would)
Fonzie's comment pretty much says it all, the fill flash in the face masks and proper shadows are the giveaways. I did plenty of complex photoshop work in school but nothing that difficult. You would have to have shot both bikes in identical lighting and since they are moving (wheels spinning) I can't think of a way to do that in the studio and it wouldn't work to have them both ride by at different times because the lighting is always different outside. (Mother natures a B!TCH) I can't see this being a PS job at all.