Perhaps the most famous being by Sir Malcolm Campbell in 1923 in his car “Blue Bird” and J.G. Parry Thomas in his car “Babs”.
Y recordiau enwocaf o bosibl yw'r rhai gan Syr Malcolm Campbell ym 1923 yn ei gar o'r enw “Blue Bird” a J.G Parry Thomas yn ei gar o'r enw “Babs”.