CARS WERE A FAD:

In her reluctance to drive or own a car, Gurian-Sherman is typical of a certain segment of Generation Y, the coveted marketing demographic encompassing the 80 million U.S. residents between the ages of 16 and 34.

Bigger than the post-World War Two baby-boom generation but without the middle-class expansion that drove the earlier group's consumer habits, Generation Y includes an increasing number of people for whom driving is less an American rite of passage than an unnecessary chore.

"That moment of realising that you're a grown-up - for my generation, that was when you got your driver's license or car," said Tony Dudzik, a senior policy analyst of the Frontier Group, a California-based think tank that has studied this phenomenon. "For young people now, that moment comes when you get your first cellphone."

US residents started driving less around the turn of the 21st century, and young people have propelled this trend, according to the federal government's National Household Travel Survey.

From 2001 to 2009, the average annual number of vehicle-miles traveled by people ages 16-34 dropped 23 per cent, from 10,300 to 7,900, the survey found. Gen Y-ers, also known as Millennials, tend to ride bicycles, take public transit and rely on virtual media.

More than a quarter of Millennials - 26 per cent - lacked a driver's license in 2010, up 5 per centage points from 2000, the Federal Highway Administration reported.

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