Dhameystir weedha soo socota: Weld wuxuu ku guuleystay Knoxville Nationals 1963, tartankii ugu horeeyay ee tartanka baabuurta. Weld wuxuu ku tartamay taxanaha USAC Championship Car ee xilliyada 1965-1972, isagoo 36 ka ciyaaray, oo ay ku jiraan
1970 Indianapolis 500 (Kuwa 500 ee Indianapolis) Wuxuu ku soo dhamaaday tobanka ugu sareeya 11 jeer, isagoo ku dhammaystiray kaalinta 4aad ee 1970 ee Sacramento. Waxa kale oo uu ahaa 1967 USAC Sprint Car Series horyaal. Waxa uu ahaa darawalkii ugu dambeeyay ee ku shaqeeya baabuur ku shaqeeya mashiinka caanka ah ee Novi ee Indianapolis Motor Speedway markii uu shil galay intii lagu jiray isku dayga isreebreebka 1966.