Ku qor sii wadida faqradan - Afar jeer oo ah SCCA Road Racing Champion, Hansgen wuxuu ka qeybgalay laba Formula One Grand Prix, oo ka bilaabmay Oktoobar 8, 1961, Watkins Glen, New York. Wuxuu dhaliyay laba dhibcood oo horyaalka ah. Sannadkii 1964 wuxuu ku tartamay MG Liquid Suspension Special, oo ah baabuur ku shaqeeya Offenhauser, oo loogu talagalay Kjell Qvale, Indianapolis 500. Waxa uu dhamaystay kaalinta 13-aad.
tartankaas. Wuxuu mar kale halkaas ku tartamay 1965, MG-Huffaker-Offenhauser, markii uu dhammeeyay 14-aad.