Metal Bites

Cities are coated in pollutions. Buildings crumble as humanity as the population declines. Very few countries are safe. Humans have encountered life from other worlds, but earth is in such a sorry state that it is of little interest to just about anybody. AMPHIBIANS, mining truck sized machines that can go on land and in certain levels of water, are the cargo-haulers of 2070, and one crew of young transporters fight off Munda's, Pickers, Brigands and war-finders as they travel with whatever cargo they get paid to move.
But what happens when on a new job, moving new materials for London bridge which has appropriately fallen down, someone who seems very interested makes a very interesting price change, which throws the crew into all types of trouble.