At the Frankfurt Motor Show last month, Mercedes Benz put on one of the most extravagant and entertaining stage shows ever seen at an international automotive event. After a jazz-funk band warmed up the

Tonight, at a private estate on Pebble Beach Golf Course in Carmel, Calif., Mercedes-Benz unveiled its latest concept car: the Mercedes-Maybach Vision 6 Cabriolet. Like the Vision Mercedes-Maybach 6 concept