With only three weeks until Zac':s race with Harris, thecrew works overtime to finish the UNB10 car. Zac'sconfidence grows with Ray's guidance. Caitlyn and Curtisdiscover a possible clue to Christian Maddox'swhereabouts. Logan discovers who Zac's been trainingwith. Harris faces a new challenge on his mom's birthdaymemorial. Curtis takes Brooke for a ride on his bike.
