Apparatus for locomotion by land, air or water; trailers for motor land vehicles; caravans; trailers for towing boats; horse trailers; braking apparatus for land vehicles; apparatus for towing vehicles; transmission control apparatus (electric) for vehicles; towing apparatus for vehicles; brake cables for vehicles; brake systems for vehicles; couplings for land vehicles; trailer couplings for vehicles; trailer hitches for vehicles; non-electric couplings for towing trailers; parts and accesso...