McLaren M9A

The McLaren M9A was a four-wheel drive Formula One car built by Bruce McLaren's team in 1969, a brand new chassis designed by Jo Marquart. It was the last of the front-running teams' four-wheel drive projects that year, after Lotus, Matra and Cosworth each built their own, because the Cosworth DFV engine gave constructors more power than the grip of their cars could handle. The M9A was recognisable by a distinctive "tea tray" rear wing. It was completed in time for Derek Bell to drive it in the 1969 British Grand Prix alongside the team's standard M7 cars, where he retired with suspension failure. After Bruce McLaren tested it himself he compared driving it to trying to write your signature with someone constantly jogging your elbow, and the car was never raced again.