sentences:  In the race, Unser dominated the first half of the race, but while leading on lap 55 suffered a blown tire handing the lead to Johnny Rutherford.But with 25 laps remaining in the race, Rutherford's engine blew, which allowed Rick Mears to cruise to an easy victory.Gordon Johncock placed second, despite running out of gas on the final lap, Bobby Unser wound up third, Wally Dallenbach, Sr. finished fourth, and Al Unser, who had tire problems of his own, finished fifth.