Story : How fast can your car accelerate from 0-60 mph? Well, whether it's fewer than seven seconds, or slightly more than 30, it's the one magic figure which manufacturers sell and motorists believe is the true test of a car's potency. But is it all that important? How do the testers achieve such dazzling figures; do the results accurately reflect what average motorists can expect from their cars? Chris Goffey reports. One hundred years on, Top Gear looks at the pioneering achievements of Karl Benz and how to give accident victims a safer ride in Britain's ambulances.