Lot #2501, a gargantuan red and white '50s era General Motors "Parade of Progress" Futurliner tour bus, sold for a staggering $4 million, Saturday at the annual Barrett-Jackson Collector's Car Auction in Scottsdale, Arizona. Ron Pratte, founder and former CEO of Chandler, Arizona-based Pratte Development Co., Inc. and the former owner of the Futurliner, donated the proceeds of the sale to the Armed Forces Foundation , a 501 3 non-profit based in Washington DC that works tirelessly to support U.S. military service members, veterans, and their families.