Johnny Herbert competed using the Stewart SF3 and the Mazda 787B for what activity?
Johnny Herbert John Paul "Johnny" Herbert (born 25 June 1964) is a British racing driver. He raced in Formula One from 1989 to 2000, for 7 different teams, winning three races and placed 4th in the 1995 championship. He also raced sports cars winning the Le Mans 24 Hours in 1991 driving a Mazda 787B. He enjoyed much success in lower-level motor racing.
Iowa Speedway Iowa Speedway is a 7/8-mile (1.4 km) paved oval motor racing track in Newton, Iowa, United States, approximately 30 mi east of Des Moines. The track was designed with influence from Rusty Wallace and patterned after Richmond International Raceway, a short track where Wallace was very successful. It has over 25,000 permanent seats as well as a unique multi-tiered Recreational Vehicle viewing area along the backstretch. It is one of only three tracks on the NASCAR circuit to have a SAFER barrier installed around the entire circumference of the outer wall (with Martinsville Speedway and Atlanta Motor Speedway being the other).