1984 Johnny Dumfries testing with Niki Lauda at Silverstone in 1984. Photo and info Scherer Race & Rally News1984 Johnny Dumfries testing with Niki Lauda at Silverstone in 1984. Photo and info Scherer Race & Rally News1984 Johnny Dumfries testing with Niki Lauda at Silverstone in 1984. Photo and info Scherer Race & Rally News1986 Australia GP Adelaide. Photo Chris Griffiths1986 Imola GP1986 British GP. Photo Tim Marshall1986 British GP. Photo Tim Marshall1986 GB GP. Photo Tony Carwithen1986 British GP. Photo Nigel Barrett1986 Detroit GP. Photo Mark Windecker1989 Johnny Dumfries testing for Benetton at Silverstone on 27 June 1989. Photo Nigel Bland1989 Johnny Dumfries testing for Benetton at Silverstone on 27 June 1989. Photo Nigel Bland
