Looking at this pic, I think it is possible that Brooke and Claire might be riding in an ore hauling truck, ie, a huge dumptruck. There are open pit mines in Oman, north of Muscat near Sohar, Oman. I wonder if CBS has fudged out part of the truck in the pic out the window. Sohar is about 120/130 miles from Muscat, but in the same direction as the airport. Sohar has at least one fine hotel, the Crown Plaza for possible pit stop. Also a nice beach resort too. It is Oman's second city according to Wiki. It might only 90 miles from Sohar to the airport. In TAR9 they went south of Muscat, so this time maybe they went north.
Here is a pic of a ore hauling truck. I am not saying it is an ore hauling truck, but just looks like it could be the lower part of the front to me out the window. Something similar to what they changed the tire nuts on in TAR11. There are also mountains in the area where the rapelling task could be done too. Plus it is a good place to hide from us.