C6 vs C5 Door sills, et al.

I was on my way out of town when the "open door" spy shot showed up, so I forgot about it. Please accept my appologies in advance if I missed the discussion about the size of the door sill. Look at the black "mat" in the door sill in Spy shot and the C5. Unless they pinched the interior (not likely) this looks like a MUCH wider car than the C5!! Either the track has been pushed out quite a bit or / and the tires are huge!
http://vettefinders.com/index.cfm?fu...secure&id=8776



Sorry guys & gals, the vette finders pic is of a white C5 vert that is the same approx shot as the spy shot. I don't know why it won't display. I'm contacting Rob.