The time it takes to accelerate from 0 to 60 mph (0 to 97 km/h) is a commonly use performance measure for automotive acceleration in the United States and the United Kingdom. In Latin America, Europe, India, Canada and Australasia 0 to 100 km/h (0 to 62 mph) is used. It became popular as a measure of acceleration necessary to reach cruising speed when the United States national speed limit was still 55 miles per hour (89 km/h). Present high performance cars can accelerate 0 to 60 mph in less than 4 seconds. The Bugatti Veyron is currently the fastest production car to reach 60 mph from a stop, reaching the speed in 2.46 seconds.