Wikipedia
'Stebro' was a Canadian constructor of Formula Junior racing cars. The team also competed in one Formula One race, the 1963 United States Grand Prix, where their one car finished in seventh place.
Peter Broeker, the owner and president of a firm of automotive accessory manufacturers, designed and built the Stebros in his Montreal plant, to promote the company in the Canadian market. A Stebro Formula Junior chassis, fitted with an enlarged Ford 105E engine appeared in one Formula One Grand Prix, the 1963 United States Grand Prix. The engine, including a Hewland gearbox, was the only alteration, with the Weber Ford 1,500 c.c. engine developing . The car was driven by Broeker and, against the more powerful Formula One cars of the day, finished in seventh place, completing 88 of the 110 laps. Broeker's Stebro later won the all-formula sprint at the Indian Summer Trophy races at Mosport on September 4, 1965.
After ending the race program, Stebro remained a manufacturer of stainless steel performance exhaust systems for European and American cars until recently. Their products were developed and manufactured from the factory in Ottawa, Canada.