We have rented a car in Bariloche through Hertz. We learned that the US credit card CDW coverage is not valid if you take the rental car coverage. However in Argentina, if you do not take their coverage, you must put the full cost of the vehicle down as a guarantee on your credit card! This is around US $16,000!! We ended up taking their coverage which has a deductible of approximately US$7,000. This deductible wont be covered by our credt card because ....we took out their coverage. Either way it doesn't work in our favor.