Buuxi weedha soo socota: Siffert wuxuu ka tagay kooxda dhamaadkii 1969, ka dib markii uu dhamaystay sannadka kaalinta 9aad, iyo Kooxda Rob Walker Racing Team ayaa tartamay markii ugu dambeysay 1970, isagoo galay Lotus 72 oo loogu talagalay darawalka Graham Hill, oo hadda ahaa 40 jir, oo diiday inuu howlgab noqdo ka dib shil weyn sanadkii hore ee Lotus. Dhibcaha ugu wanaagsan ee uu gaaray Hill wuxuu ahaa kaalinta 4aad ee tartanka
wuxuu ahaa horyaalkii Spain, laakiin wuxuu u soo biiray Brabham dhamaadkii sanadka.