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Lines formed to tour Newmar Inc.’s relaunched London Aire luxury diesel pusher, shown as a “concept vehicle” at the 42nd Annual National RV Trade Show, Nov. 30-Dec. 2 in Louisville, Ky. London Aire, which is expected to be available in June, will be offered only in 45-foot lengths on a Spartan K3 chassis powered by a 600-hp Cummins ISX engine. The coach will feature molded fiberglass slideouts with air seals, one-piece windwhields and an 82-inch interior height. With the number of floorplans yet to be determined, London Aire is expected to lead Newmar’s lineup with a retail price of more than $500,000.