action panoramics

I understand your problem, in Houston this year I put together a 6 panel panoramic of thte race site at the Shell Eco-Marathon and then decided that I needed some cars in it. Fortunately the cars moved faifly slow so I photographed them individually in their places with the same lense and focal length and then layered them in, photo has been blown up to 3x4 feet and you can't tell. Now I am trying to accomplish the same thing with the local stock car track but the fast moving cars make the earlier process more difficult. Everyone I have talked to about the problem suggest multople identicle cameras, I don't think the wife will understand the need for 5 more Canon 5DMKII's for one shot.