The life-sized Lego car that isn't just hot air

Your dream wheels might include a Jaguar, a Porsche or a BMW. But have you considered driving a car made of Lego that runs on air? 

Two inventors have made this improbable-sounding vision a reality, by building a drivable hot-rod with 500,000 of the toy bricks. The entire vehicle, with the exception of the wheels, tires and gauges, is made of Lego.