motocross and enduro bikes using engines developed by the Austrian Rotax company, another Bombardier subsidiary. Former motocross World Champion Jeff Smith was later engaged to test and validate prototype motorcycles and establish a race program. Serial Production began in 1973. Tmotocross and enduro bikes using engines developed by the Austrian Rotax company, another Bombardier subsidiary. Former motocross World Champion Jeff Smith was later engaged to test and validate prototype motorcycles and establish a race program. Serial Production began in 1973. The mache mac