I've heard that too, though I understand they stripped a lot of the ballast wieghts out of it, cut the cab roof down, and some other mods that would make returning it to original difficult. The other story I heard, was that the doner vehicle had already been replaced at the airport (Heathrow) from where it came. The only reference I have found is that it was parked at a theater at a premiere in the UK. After that, no one seems to know.