Anyone know what real vehicle the RT01 is based on?

Just wondering if anyone has any further info on this. I know the fake APC in Aliens was actually built around a working Airport Tug, and it got me thinking just out of curiosity. I suppose there is also the possibility they spent millions to make these from scratch from the ground up, but I think the RT01 has actual real world APC written all over it. [img]http://www.prometheus-movie.com/uploads/prometheus_rto1.jpg[/img] I know some of this was filmed on sound stages in Canada. I first thought that perhaps they had acquired some former Canadian decommissioned armoured vehicle chasis. Our DND has recently been donating some older obsolete stuff to African Union countries for UN type peacekeeping work, and I know that some have even gone to local police forces such as the RCMP.But then I thought that does not make sense as I dont the government would give any to a Movie production! But the more I looked at, I am pretty sure these things are built on the existing chasis of surplus old Soviet BTR's. [img]http://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/BTR-60PB_DA-ST-89-06597.jpg/800px-BTR-60PB_DA-ST-89-06597.jpg[/img] Anyone know for sure?? Has any other info on the RT01 been released anywhere? Edit.. Oh.. found another pic on Google. Wow, look at this old hulk somewhere in Poland I think. Yep.... I think that is it. Looks like basically same proportions and spacing of road wheels and axels.... [img]http://images.travelpod.com/tw_slides/ta00/bb4/5c4/soviet-made-btr-60-apc-gdansk.jpg[/img]