Air Ride Suspension!!! The Airstream Interstate Grand Tour is best in class… a classic, luxurious touring coach built by Airstream on a Mercedes Benz chassis with a Mercedes Benz 3.0L Turbo Diesel engine. The Airstream Interstate says “luxury” from stem to stern, with features like the high-gloss laminate cabinetry with solid shut cabinet hardware, plank-style flooring, Corian countertop, Magic Suede on the walls and UltraLeather seating, to name a few. This floorplan features seating for four, with a power rear seat that turns into a large bed. Take comfort, convenience and luxury everywhere you go… and with the Airstream Interstate, you can go anywhere!