Automobiles using control technology that reduces engine sounds; automobiles and their parts and fittings; two-wheeled motor vehicles and their parts and fittings; bicycles and their parts and fittings; automobile engines; non-electric prime movers for land vehicles, not including their parts; air turbines for land vehicles; gas turbines for land vehicles; driving engines for land vehicles; diesel motors for land vehicles; internal combustion engines for land vehicles; gasoline engines for land vehicles; suspension systems for land vehicles; shock absorbers for land vehicles; springs for land vehicles; brakes for land vehicles; electric motors for land vehicles