I just saw The Rover which had a RHD M998 HMMWV because it takes place in Australia. The movie was absolutely terrible but this was the only redeeming quality.
The movie also had a Chevy based crew cab pickup which is a Holden branded Colorado. A rather interesting part was that it had what appeared to be a larger 6 lug wheel pattern, a front hub that looked like serviceable wheel bearings where inside (no lockout), and a removable 3rd member rearend. I want to know what parts line GM is using on that product because the US version has nothing close to that...go figure!
***The Holden appears to be an Isuzu chassis truck so that explains the uncoventional GM drivetrain along with an optional 2.8L Duramax engine, thanks GM!!!***