killing the FJ was stupid indeed - i could see adding tires to the overweight rover but not to the FJ. somehow the desert sand/soil of that region doesn't behave in the same way as other sandy soils (at least that i've driven on). maybe its because its volcanic but the stuff i ran into in southern peru (similar to the terrain in western bolivia/northern chile) seem to compact much less than sand in the desert in nevada or california. they do make bricks out of that stuff (sillar). anyway, i don't think they did their research in that regard.
as funny as these guys are the show is tough to watch sometimes, especially when they regress into that stereotypical 19th century british imperial mode: tearing apart a mercedes next to people surviving on pennies, destroying an FJ on a hillside for the hell of it, etc. i know they aren't anthropologists but a little less brashness would play better