Chamberlain is best known for creating sculptures from old automobiles (or parts of) that bring the Abstract Expressionist style of painting into three dimensions. He began by carving and modelling, but turned to working in metal in 1952 and welding 1953. By 1957, while staying with the painter Larry Rivers in Southampton, New York, he began to include scrap metal from cars with his sculpture Shortstop, and from 1959 onward he concentrated on sculpture built entirely of crushed automobile parts welded together. Far more than just another wrinkle on assemblage Shortstop and subsequent works completely reinvented modeling casting, and volume altering Marcel Duchamp's notion of the readymade and using the car as both medium and tool.In 1962 Donald Judd wrote, "The only reason Chamberlain is not the best American sculptor under forty is the incommensurability of 'the best' which makes it arbitrary to say so."
Chamberlain also made abstract colour paintings from 1963, and from 1967 he made several films, such as "Wide Point" (1968) and "The Secret Life of Hernando Cortez," filmed in Mexico with Warhol regulars Taylor Mead and Ultra Violet. In the last decade of his life, the artist expanded his work to large-format photographs.Wikipedia