caravan spoilers; caravans; storage boxes and containers adapted for use with caravans; caravan tents; off-road vehicles; mobile homes [caravans]; camper trailers; camper vans; camping trailers; suspension systems for vehicles; suspension shock absorbers for vehicles; suspension springs for vehicles; torsion bars for vehicles; suspension systems for land vehicles; suspension systems for automobiles; suspension shock absorbers for automobiles; wheel suspensions; vehicle suspension springs