Vehicles for use on land; transmission shafts for land vehicles; suspension systems for land vehicles; suspension shock absorbers for vehicles; gear boxes for land vehicles; clutches for land vehicles; differential transmissions for land vehicles; gearing for land vehicles; framing and bodies for land vehicles being structural automobile body parts; engines for land vehicles; cardan shafts for vehicles; parts and fittings for land vehicles, namely, connecting rods, hood shields, drive gears