"The road to economic recovery isn't a road - it's a flight path." That's the message currently plastered all over the London underground, courtesy of Heathrow owners BAA. The company's new campaign to reopen the third runway debate is a self-serving effort to play on people's economic anxieties at a time of fear, that much is obvious. But more than that, it's a con - both politically unrealistic and, more importantly, economically incoherent.

