Possibly XL1S footage?
 

Here's a site that is producing a documentary type DVD. It's a pretty neat trailer with exotic cars. See if you can spot the camera man with the XL1S..

http://www.rpmvideo.com/playersrunvideo/

There are at least three scenes with Canon cameras. The distances involved preclude me from saying they are XL1's or not. But they are definitely Canon (white body).

Gotta luv dem Canon's!