sentences:  The first competition appearance of a Ford 3L prototype was at the BOAC 500 race at Brands Hatch in Kent.Despite apparent pace, the car was criticized for instability at high speeds and, due to mechanical and electrical failures, did not finish any of the races for which it was entered.For the 1969 season the P68 was used as the basis for an aborted, fully open Spyder, dubbed the Ford P69.