Tommy has described how the backward facing header pipes helped to direct all the tyre smoke ( the front wheels were also driven , of course ) and that this cleared a vision tunnel down the middle of the smoke .
Tommy could see the track ahead .
Tommy has described how the backward facing header pipes helped to direct all the tyre smoke ( the front wheels were also driven , of course ) and that this cleared a vision tunnel down the middle of the smoke so that he could see the track ahead .