.
They’re road racers…
http://cgi.ebay.com/ebaymotors/Ford-Mustang-FR500-Shelby-predecessor-Race-car_W0QQitemZ190073523864QQihZ009QQcategoryZ98064QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/SHELBY-MUSTANG-VINTAGE-RACE-CAR-scca-chev-corvette_W0QQitemZ170070939221QQihZ007QQcategoryZ98064QQssPageNameZWDVWQQrdZ1QQcmdZViewItem