How the driverless car will liberate us all (except smokers, of course)

I was listening to the radio the other morning to hear people complaining about the huge cuts in the number of traffic police patrolling English roads. This meant that drivers would disobey motoring laws with impunity, they said. They would babble away on their mobile phones, unfasten their seat belts, and generally break the rules of the road in the knowledge that they were most unlikely to get caught.