Adrian Chiles travels to Scotland where he meets a husband and wife whose marriage is being put under strain by the former's aggressive driving. Can he offer some motoring advice that will act as a salve for their troubled relationship? Meanwhile, chefs Nick Nairn , Brian Turner and Paul Rankin continue their international off-road driving challenge, and learner Jenny Brooks gets some motoring tips from Driving School's Maureen Rees. Series producer Jim Brown ; Executive producer Dick Colthurst