The Bright Orange Winkelvan arrived Vail, Colorado (USA) in 1973 designed by Sandy Van Ginkel
That piece, like most online materials, is simplifying the narrative by mashing up information about two vehicles, the New York-commissioned Ginkelvan from 1972 and the puzzle vehicle from 1973 (photographed in Vail, Colorado). All I need from you is the (very slightly) modified name of the puzzle vehicle that sets it apart from the 1972 vehicle.
By the way, some physical differences between the two vehicles can be seen here: