Ku dhammaystir weedha soo socota:
Indianapolis 500, lix maalmood ka dib shilkii Roberts, waxay keentay in la kordhiyo cilmi baarista dharka dabka ka hortaga. Waxay sidoo kale horseeday horumarinta unugyada shidaalka ee Firestone RaceSafe. Baabuurta tartanka ee casriga ah waxay isticmaalaan shidaal ku shaqeeya oo xumbo ka buuxo si looga hortago shidaal daadanaya oo la mid ah kii baabuurka Roberts. Sidoo kale, dharka dabka ka hortaga oo buuxa ayaa si tartiib tartiib ah loo soo bandhigi doonaa, taasoo horseedi doonta dharka tartanka ee khasabka ah ee Nomex. Roberts wuxuu lumiyay saaxiibkiis dhow, Joe Weatherly, bishii Janaayo 1964 ee Motor Trend 500, ee Riverside, California.