Smoking behind the wheel could soon be stubbed out, if changes to the Highway Code go ahead. A revised driversâ€™ bible, due out next spring, will warn motorists that sparking up on the road is a serious distraction. It could pave the way for an all-out ban in cars; Scottish van and lorry drivers are already preparing for new laws outlawing lighting up from May. The fresh code is part of a raft of Government changes concerning motoring habits. The Driver Standards Agency has now banned electronic parking brakes from learner test centres and says itâ€™s looking to outlaw other driver-assistance gadgets.