Buuxi weedhan soo socota: Walker waxaa la siiyay kursi Formula One oo buuxa si uu u wado Lotus 72 xilli ciyaareedkii 1972, isagoo ah darawalka labaad ee Emerson Fittipaldi. Markii xilli ciyaareedku sii socday, si kastaba ha noqotee, labada Walker iyo kooxduba waxay noqdeen kuwo aad u niyad jabsan. Ka dib markii Lotus ay ogaatay in Walker uu tijaabiyay baabuur Formula 2 ah oo koox kale ah, waxaa laga saaray kooxda
G.P.ka Talyaaniga iyo G.P.ka Kanada, halkaas oo lagu badalay Reine Wisell. Walker wuxuu dib ugu soo laabtay US GP, laakiin wuu ka fariistay.