Car-free world for a day?

World Car-Free Day on September 22 aims to stimulate thought and action on sustainable alternatives to travelling by car.

This year, with the price of petrol at a record high, there's a tangible monetary incentive to become involved.

But forgetting cash costs, the fact that total greenhouse gas emissions from transport are growing faster than any other atmosphere pollutant, should be reason enough to leave the car at home.

Only one Irish city, ...