DescriptionL. I258/2A.3 FRANCE - Paris – 1970. More than 200 million automobiles now use the world's roads. In cities, they dangerously pollute the air we breathe. Travelling 1,000 Kilometres (600 miles), a car consumes as much oxygen as a human being does in a year, and in addition to lethal carbon monoxide, it emits annually about one kilogramme of lead. Another problem created by the proliferation of motor vehicles is how to dispose wrecked and worn-out hulks. Increasingly they pile up in hideous "cemeteries" which blight the countryside, as here at Genevilliers. Reproduction authorized, please credit: UNESCO/R. Pardini.