James May downsizes to explore the weird world of the microcar. He discovers how austerity and fears of congestion led to European tragicomic disasters in the shape of Britain's infamous three-wheelers, French death traps and German absurdities. James takes to the battlefield to settle one of the greatest rivalries in car history and travels to Japan for an urban race between a state-of-the-art micro sports car and the best-selling vehicle in history. (thetvdb.com)