 Complete the following phrase:  Johncock took a second Indianapolis 500 victory in 1982 by a car length over Rick Mears. After falling behind on the final sequence of pit stops, Mears was rapidly closing on Johncock in the final laps, and on the 197th and 198th laps came from 3 seconds back to within car lengths. Johncocks tires were deteriorating by the lap, and with each turn the car understeered more severely. Mears caught Johncock at the start of the final lap and tried to pass him for the win, but Johncock made a decisive defense of first place in Turn One and held on to win by 0.16 seconds. At the time it was the closest finish in history and remains the fourth-closest behind the 1992, 