The story of industrial vehicles is more than a technical saga. It echoes developments in industry and society worldwide - how the quirks, specialities and oddities in both spheres became progressively ironed out in the first two thirds of the 20th century. Tied to a six-part Channel 4 documentary, this is a survey of classic commercial vehicles across the world, from buses and trams to lorries, tractors, JCBs, trains and tubes. It examines the huge changes that have taken place in public, emergency and industrial road-transport machines, from the advent of steam-powered lorries to the first Ford Transit.