sentences:  There were two late-race cautions, one when Wally Dallenbach, Sr. spun with 9 laps to go, and one when Pancho Carter lost a wheel, which led to a two-lap shootout but Unser pulled away en route to his first and only win of the year, snapping a six-race Penske streak.Bobby Unser claimed second, Rick Mears third, Gordon Johncock fourth, and Tom Sneva fifth.Mears's third was enough for him to claim the inaugural CART championship, winning by 240 points over Bobby Unser.