Mezue ahịrịokwu na-esonụ: N'afọ 1971, "Stichting Autoraces Nederland" (Foundation for Car races in the Netherlands) goro Surtees TS7 ka ọ mee F1 mbụ ya na GP nke ụlọ ya ebe ọ kwụsịrị nke asatọ na GP dị mmiri mmiri. N'afọ sochirinụ Van Lennep meriri 1972 Rothmans European Formula 5000 Championship na-anya Surtees TS11 na McLaren M18. Ọ na-akwọkwa ugboro abụọ maka Williams GP otu, na-akpata ya mbụ World Championship isi na nke isii ebe na 1973 Dutch Grand Prix. Na Ensign, o nwetara akara nke abụọ na
1975 German Grand Prix, na-eme ka ọ bụrụ onye ọkwọ ụgbọ ala Dutch Formula One nke ise na-aga nke ọma n'azụ Max Verstappen, Jos Verstappen, Carel Godin de Beaufort na Christijan Albers.