 The two times are averaged together to achieve the commonly accepted 0 to 60 time.Jalopnik has said that launch control systems appearing on production exotic cars in the 2010s have made published 0 to 60 times invalid, since these cars have slower times from 5 mph to 60 mph.Most car magazines and manufacturers in the United States use a rolling start allowance term "1-foot rollout", which means that the timer is only started once the car has traveled , reducing the measured time by up to 0.3 seconds.