Harvey Postlethwaite
Barnard also helped design the Benetton B191 for the season, assisted by the team's new designer Mike Coughlan. The B191, which was the first Benetton to use the raised anhedral front profile pioneered by the Tyrrell team in 1990 (the Tyrrell 019 was designed by Harvey Postlethwaite) and has since become standard on nearly all open wheel racing cars, carried Piquet to his 23rd and final Grand Prix win in Canada. After completing the Benetton B192 for the season (with assistance from Rory Byrne and Ross Brawn), in which future 7 time World Champion Michael Schumacher would take his first ever Grand Prix win in Belgium, Barnard left Benetton after a dispute with team boss Flavio Briatore over money.