<a href="http://rmarsden.livejournal.com/4423.html">Rhodri Marsden: I drive better when I'm on the phone</a>

You don't often hear people claiming that downing a bottle of gin has no effect on their driving skills. Unless they've already had the gin, they're motoring ferociously down the A24 and you're sitting in the passenger seat, in which case it would be advisable to get them pull over and take the wheel yourself.