Is it just me, or is the M2 one of the nation’s most depressing motorways? Heading coastbound, it starts off OK in four-lane splendour. But by the time you bid the Gillingham junction farewell it has been eroded to a miserable two. Two lanes is not a motorway in my book…that’s a glorified A-road. Two lanes which mean it takes precious little for the road to become snarled up with gut-wrenchingly slow-moving traffic – two lanes in which you can normally rely on one of two things. Firstly, if you dare head into the fast lane to overtake the steady stream of lorries making their generally sluggis…