 He designed and built cars for Formula Junior and the 1962 and 1963 Indianapolis 500.A chassis specialist, he worked at Formula 1 team BRM and later drew up chassis for the Intermeccanica Italia and Reliant Scimitar GTE road cars.John Crosthwaite was born at Thornaby Hall, Thornaby-on-Tees, Yorkshire on 9 October 1925.