Rubuta ci gaba don wannan sakin layi - Ana kwatanta motar motar a matsayin katako na katako. Wannan ba shi ne na farko da Costin ya tsara kuma ya gina ba. A cikin 1959 ya yi haɗin gwiwa tare da Jem Marsh don fara Marcos Engineering da kuma samar da katako na katako Marcos GT Xylon wanda ya fara a 1959. A cikin 1965 an ƙaddamar da tseren wasanni na Costin-Nathan, wanda Roger Nathan ya ba da kuɗi. Kuma a cikin 1967 motar motar Costin-Harris Protos ta buɗe ta fara tsere ta Ron Harris Racing a cikin abubuwan da suka faru na Formula Two (F2), da kuma bayyanar daya a cikin Formula One (F1) a 1967 German Grand Prix
hadin gwiwar F1 / F2 a Nürburgring.