This quickly dispels the two biggestmyths of winter driving: that all wheel drive or SUVs are a cure all, and that relatively new all-season tires are adequate for frequent winter driving.
But Mr Johnson, who was made shadow chancellor two weeks ago, accused the government of being "deficit deceivers" who had peddled "myths" to the British public, including that the "biggest global economic crisis since the Great Depression is the fault of the previous government".