Well, I took a look around Canon's on line virtual museum, and couldn't find any instance, or reference to, power/motorized zooming in either the lenses or bodies. Perhaps they keep the freaks looked up, away from the public.
BR From: "Treena" <[EMAIL PROTECTED]> I believe it was the EOS 620 (or something to that effect) -- I have a friend with that body who also has a power-zoom compatible lens.