Mezue ahịrịokwu na-esonụ: Malite na 1958 na Lotus VI na 1172 championship, na 1959, Hart jikọrọ aka na Len Terry iji gbaa Terrier Mk2 ya na asọmpi ahụ wee merie Chapman Trophy. N'afọ 1960, ọ na-akwọ ụgbọ ala Terry nke nwere engine n'ihu Formula Junior Terrier Mk4 wee mepụta isi na-agbadata maka injin Ford Anglia na-ebugharị ụgbọ ala ahụ. Na Oulton Park n'October 1960, Hart nwere nnukwu ihe mberede na ụgbọ ala, nke dugara Terry n'ịmepụta Mk4 usoro 2, nke Hart na-agba na 1961. Ụgbọala ndị nwere injin n'azụ bụ ugbua nke nkà na Hart nwere naanị obere ihe ịga nke ọma na ụgbọ ala ahụ. Hart nwere ọmarịcha ọrụ dị ka onye ọkwọ ụgbọ ala n'ụdị otu oche dị iche iche. Ọ gbara asọmpi na Formula Junior na Formula Three, mgbe ahụ gụsịrị akwụkwọ na Formula Abụọ na ọrụ Lotus Formula Two otu nke Ron Harris na-agba. Ọ gbara asọmpi n'ọsọ ole na ole na-abụghị asọmpi Formula One na-eji ụgbọ ala Formula Abụọ na 1967, ọ tozuru oke maka asọmpi Formula 2.
Nnukwu Prix nke Germany na Nürburgring n'ime Protos-Cosworth.