Chaparaal 2J 'Sucker Car' with Lexan skirting that maintained ground clearance in sync with suspension. Fat-Blok Chevy engine and a snowmobile two-stroke twin cylinder engine to run the fans. Jim Hall and Hap Sharp incessantly pushed the envelope in the 60's and into the 70's. Nearly all the Chapaaral cars survived and are in Hall's 'Rattlesnake Raceway' museum in Midland Texas. Hall and the Chapaaral cars (maintained to remain operational) are living ledgends.