Maybe I've missed it, but have we addressed the issue that in the picture of Jaime/Cara running, neither one of them has a backpack? I know someone mentioned that they may be running back to their cab to get them, but it is possible that they are one of the ones to go to the mat without theirs? I know they are still in the race, but that could screw up their placement.
Also the searching for momentos, could this possibly have anything to do with the roadblock that goes up in smoke? Maybe they have to search for specific items (momentos) to burn as an offering?
Just throwing somethings out there.