Michio's desire to diversify into automotive products was interrupted by World War II.[13] Before it began building four-stroke engines, Suzuki Motor Corp. was known for its two-stroke engines (for motorcycles and autos).[14] After the war, Suzuki made a two-stroke motorized bicycle, but eventually the company would be known for Hayabusa and GSX-R motorcycles, for the QuadRunner, and for dominating racetracks around the world.