Chaparral responded with the 2H 1969. The 2H broke new ground, seeking to reduce drag but did not achieve much success. The 2J that followed was perhaps the ultimate example of what Group 7 rules could allow in a racing car. It was a twin-engined car, with the by-then usual big-block Chevrolet engine providing the driving force, and a tiny snowmobile engine powering a pair of fans at the back of the car. These fans, combined with the movable Lexan "skirts" around the bottom of the car created a vacuum underneath the car, effectively providing the same level of downforce as the huge wings of previous vehicles, without the drag. Although far too mechanically complex to survive in racing environments, the theory was sound, and would appear in Formula One a few years later in the BT46B "Fan Car" of 1978. Lola The Lola T70, T160-165, T220, T260, and T310 were campaigned by the factory and various customers, and were primarily Chevy powered. The Lola T70 driven by John Surtees won the first Can-Am championship in 1966. Lola continued to experiment with new designs versus McLaren which refined the design each year. The 1971 Lola T260 had some success with Jackie Stewart taking two victories. In 1972 a radical new design, the Lola T310, made its appearance. The T310 was the longest and widest Can-Am car of the era versus the short stubby T260. The T310 was delivered late and suffered handling problems the entire year with its best finish a fourth at Watkins Glen. Others While McLaren and Porsche dominated the series for most of its existence, other vehicles also appeared. Well-established European manufacturers like Lotus, CRD, in the form of their Merlyn Mk8 Chevrolet, Ferrari and BRM, appeared at various times with limited success, while March tried to get a share of the lucrative market in 1970–71, but could not establish themselves. Ford also flitted across the scene with a number of unsuccessful cars based on the GT40 and its successors. American specialist marques like McKee, Genie and Caldwell competed, alongside exotica like the astonishing four-engined Macs-It special. British-born mechanic and engineer Peter Bryant designed the Ti22 (occasionally known as the Autocoast after one of the team's major backers) as an American-built challenger to the British McLarens and Lolas. The car made extensive use of titanium in its chassis and suspension, and Bryant experimented with aerodynamics and with