Action Express Racing's new Cadillac DPis swept the front row in Thursday's qualifying for the 55th Rolex 24 at Daytona, led by Joao Barbosa with a Prototype class-record lap of 1m36.903s in the No. 5 Mustang Sampling Cadillac DPi.Barbosa nipped Action Express Racing teammate Dane Cameron (1m36.973s in the No....