John Darby joins USAC as national technical director
Darby is the former Managing Director of Competition at NASCAR The United States Auto Club (USAC) announced its USAC.25 Series (quarter midgets) has retained the services…
John Darby, World Racing Group Upholds Penalities
World Racing Group and John Darby Announce Final Appeals Upheld CONCORD, N.C. – July 23, 2016 –World Racing Group Commission Chairman Potestas, motorsports executive John Darby,…