Andrew M Brown edits The Sunday Telegraph's Comment pages. He also writes about mental health and the influence of addiction on culture. Are SUVs driven by people who are worried about the state of their marriages? Waiting at the lights to cross the Fulham Road the other morning, I spotted someone driving a four-wheel-drive truck/car that seemed unusually gigantic even for this part of west London, which is teeming with Chelsea tractors. This example was a full-size, imported SUV, a Chevy Tahoe, and at the wheel was an attractive mother. The Tahoe's capacious interior made her appear tiny. Her (plump) daughter sat in the back. Anyway it was strange to see the tank-like Tahoe -- advertising slogan: "Like a Rock" -- struggling through the old streets of London. This (below) is more the sort of scenery that suits a Tahoe -- the vast open spaces. The commercial was released in 2002 and the poem the great James Garner reads was written by Patrick O'Leary, a science fiction writer. What with the general hostility to big cars that's in the air at the moment, it is hard to imagine an advert like this going out today. For those of us who don't have an SUV, there was a deeply satisfying Malcolm Gladwell article on the subject published in the New Yorker in 2004. Gladwell cited market research reported in Keith Bradsher's book High and Mighty showing that SUV buyers are "insecure, vain and frequently nervous about their marriages" and found comfort