I rented a Ford Flex to visit family and while we were driving on top of the mountain, the passenger rear window exploded. It shattered into hundreds of pieces. It almost felt like someone threw a rock to the side window and left a whole right in the middle. There were no cars in front or back of the SUV, and there was no one around in such area and on top of the mountain. It has to be a manufacturing problem and that is why I would never buy an american car.