The McLaren M23, designed by Gordon Coppuck, was the team's new car for the season. Sharing parts of the design of both McLaren's Formula One M19 and Indianapolis M16 cars (itself inspired by Lotus's 72), it was a mainstay for four years. Hulme won with it in Sweden and Revson took the only Grand Prix wins of his career in Britain and Canada. In , Emerson Fittipaldi, world champion with Lotus two years earlier, joined McLaren. Hulme, in his final Formula One campaign, won the Argentinian season-opener; Fittipaldi, with wins in Brazil, Belgium and Canada, took the Drivers' Championship. It was a close fight for Fittipaldi, who secured the title with a fourth at the season-ending United States Grand Prix, putting him three points ahead of Ferrari's Clay Regazzoni. With Hulme and multiple motorcycle world champion Mike Hailwood, he also sealed McLaren's first Constructors' Championship. The year was less successful for the team: Fittipaldi was second in the championship behind Niki Lauda. Hulme's replacement Jochen Mass took his sole GP win in Spain.