Brake calipers for land vehicles; Brake pads for vehicles; Steering knuckles; Steering units for land vehicles and parts thereof; Steering wheel attachment comprised of an electric motor and drive gear and a ring gear that when activated by an external controller, turns the steering wheel to effect automatic vehicle steering in straight or curved paths; Steering and suspension systems and parts for steering and suspension systems for vehicles, namely, upper ball joints, lower ball joints, ball joints with control arms, bushing kits, inner tie rod ends, outer tie rod ends, sleeves, idler arms, center links, stabilizer kits, inner sockets and pitman arms; Suspension shock absorbers for vehicles; Vehicle parts, namely, constant velocity joints; Vehicle power train mechanism comprised of clutch, transmission, drive shaft, and differential; Vehicle wheel hubs