Angered at being ordered to the back of the pack early in the race, Brazil's Andre Ribeiro got his revenge at the end.
Ribeiro pulled away from Bryan Herta in the final seven laps to capture the Marlboro 500 by 1.378 seconds Sunday, his second Indy-car victory of the season.
"At the end, we saved the car as much as we could," Ribeiro said. "So at the end, we had a very good and very reliable car to push very hard."
His problems with CART officials came after a pit stop on Lap 8 while the yellow caution flag was out.
Under IndyCar rules, introduced at Michigan International Speedway during the inaugural U.S. 500 in May, cars are required to rejoin the field at the end of the line after pit stops. Ribeiro, who had been running sixth, incorrectly blended into the field in the 14th spot.
He was ordered to the rear.
"I was screaming inside the car," Ribeiro said. "I couldn't accept that. I still don't know why it happened, because when I came into the pits, the pits were open. I was completely free to come in."
It was left to Tasman Motorsports Group engineer Don Halliday to settle his driver down by radio.
"We had a fantastic race," Ribeiro said. "After that incident, my engineer helped put me back in a calm position. We knew we had a car that could go strong and fast. In a 500-mile race, you don't have to worry about the beginning of the race, but you have to worry about the end."
Brazilian Mauricio Gugelmin, the only other driver on the lead lap, was third in a Ford-Cosworth.
Al Unser Jr. was fourth in his Penske-Mercedes. It marked the 13th straight race without a triumph for the Penske team, tying a team record for frustration.
Emerson Fittipaldi completed only one lap, and that under a caution flag, before going out of the race after a fiery crash at the exit of Turn 2. The 49-year-old Brazilian was reported in serious but stable condition with a fracture of the seventh cervical vertebra and a partly collapsed left lung.
TRACY UPDATE: Penske driver Paul Tracy, injured during practice Saturday, was released from a Jackson, Mich., hospital. Tracy sustained a chip fracture of his sixth vertebra and bruised his knees when he crashed.
Tracy will be re-examined Wednesday in Indianapolis by Dr. Terry Trammell and a decision will be made on whether he will be able to drive at Mid-Ohio on Aug. 9-11.
GERMAN GRAND PRIX: Formula One series leader Damon Hill won at Hockenheim, taking the lead when Gerhard Berger's engine blew up with three laps left.
Hill, who started from the pole position, fell behind early but rallied to edge Jean Alesi of France by 11.5 seconds in the 190.8-mile race.
NHRA: Blaine Johnson ran a quarter-mile in 4.671 seconds, good for 301.01 mph, to beat Kenny Bernstein and claim Top Fuel honors in the Autolite Nationals at Sears Point Raceway in Sonoma, Calif. Tony Pedregon edged John Force, 5.058 seconds to 5.076, to win in Funny Cars.