Adding to GB's opinion, unless the transportation is strictly a traditional "American road trip" somewhat like TAR8, then yeah, I believe the idea could work if there is the right amount of pizzazz in team development, editing, and outrageousness. Usually the spin-offs of TAR crash and burn like The Great Escape (TNT) and Expedition Impossible (ABC) due to the lack of knowing each person individually before the end of their experience on the show and challenges that didn't brand themselves as say... "Expedition Impossible".