No it's not more efficient, he doesn't use it as much.

Most people have a certain amount of necessary driving to do, but in England a lot of people go on about unnecessary car use, for example parents driving kids to school who live only a mile (or less) away. And politicians keep wanting people to use public transport but except in big cities like London with advanced public transport systems, generally people are just too lazy to get the bus (every time they do surveys, people pretty much say they'd only get on a bus if there was a bus stop more or less on their doorstep) or they seem to think they are too good for it. But the thing is most small towns don't have very good transport systems so it's understandable why most people just jump in the car to go to the shops and such. I mean I do this myself a lot of the time (but sometimes I get the bus into town).