Articulated vehicles; children's four-wheeled vehicles (for transportation); combined spring and shock absorber units for vehicles; land automotive vehicles; land vehicles; load carrying vehicles; motor land vehicles; motor land vehicles for road use; motor land vehicles having four or more wheels; motor vehicles; off-road vehicles; road vehicles (for transportation); shock absorbers for the suspension units of vehicles; shock absorbing springs for vehicles; suspension apparatus for vehicles; suspension installations for vehicles; suspension parts for vehicles; suspension systems for vehicles; suspension units for vehicles; suspensions for vehicles