So I'm wondering... there was a throwaway line in the movie about the transformers having a 3D hologram shell, or something to that effect. I think Tyrese says it when they're taking about the picture he took of Blackout in the first action sequence. So is that how they change appearance? If that's the case, what's with all the moving parts? Couldn't they just lay down and put their tires out, rather than doing all that reconfiguring?