She touches on drag racing as she sees it, and. 31 juil. 2011 · While Hedström worked to improve his carburetors and design new high performance mechanical valves, two of the most influential contests of the 20th century were being planned: an annual Tourist Trophy event on the Isle of Man (Isle of Man TT), and The English 1000 Mile Reliability Trial (which would later evolve into today’s International 6 Day.