For the ultra rich of Asia who like to be chauffeured around in large limousines, Audi is experimenting with a new large-sized luxury van that can ferry passengers around while they kick back on wide couches offering extra legroom. The German manufacturer is currently sounding out the market for a plus-sized sedan called the Urban Sphere, a concept vehicle with an eye primarily on the luxury class clientele in Asia. This MPV, based on Audi’s new electric platform, is clearly positioned above the Multivan from the parent company VW. The concept was designed for the motor show in Beijing but bec…