Spoiled, that's what I am

[SmartWombat]

I took the 1DSmkII, 1DmkIIN and the 20D as backup to a karting event.
Eventually the batteries on the 1D died, yes I know it usually goes for a day, but I hadn't charged them before the race because I knew it was only a 3 hour endurance.
Yes, I know, I forgot qualifying.
So I shot a lot of the later racing with the 20D.

Not that much of it was in focus.
Or that the karts were in the frame for the first few shots.

I realise now just how good the 1D bodies are, in comparison.
I'm sure in low light conditions the 20D had over a half second shutter lag.
But the viewfinder was so small and dark that even with my glasses I couldn't see to manual focus and shoot without AF.

Amazingly out of one card I actually got 6 usable shots.
Can you tell, which camera was which?