" just did a side by side comparison with Raiders playing on my tivo, and my dvd of raiders playing on my pc :P. I can't really tell if it is CG or not....I can tell it definately looks better on the USA version. I don't know if it is CG, or if they just cleared it up real well, but it looks more real, like the truck is really in the scene in the USA version, rather than added in later."
One explanation is that it was just re-comped. I don't believe the DVD version had any special enhancement done, and that shot is always been one of the dodgier composites. If they went back to the original elements and digitally recomposited it, the truck would blend in and look seamless, and the whole shot would be much cleaner as it has some grain in the original version. This might give it a "CG" look when it just goes by and you are not expecting it. But then some people are saying its a whole new shot. I just saw Raiders on TV last week, not on USA, but it was a 16x9 letterbox in HD--which may very well be the same transfer USA got. I didn't watch up to the truck shot, but what I did notice is that this new 16x9 aspect ration version had custom panning and scanning, so shots looked different often, even though they weren't. Either one of these, or a combination of both, could possibly explain it. To me it just seems out of place to do one single CG shot.