Cheez-It 355 pole sitter Jeff Gordon has gone behind the wall due to an apparent power failure on his No. 24 Hendrick Motorsports Chevrolet that occurred on Lap 50.
Gordon was running second to Marcos Ambrose when his car was spotted slow on the course heading into Turn 6.
The car did not go into the pits and as it crawled down the front stretch of the Watkins Glen International road course, NASCAR chose to bring out a caution flag.
A tow truck eventually got behind Gordon and pushed him behind the pit wall, where members from his team immediately went to work trying to diagnose the problem.
Gordon had led the first 29 laps of the race.
“We can’t find it, the car just lost power,” team owner Rick Hendrick said to ESPN as the crew tried to find the issue. “Everything’s dead. We put the batteries in it, but it’s lost power. Some connection, somewhere. We just don’t know where it is.”
Also suffering problems is fellow ex-Sprint Cup champion Brad Keselowski, who went to the garage shortly before the restart at Lap 55. Keselowski had sustained front-end damage to his car earlier in a run-in with Matt Kenseth, but issues with his brakes were the cause of him leaving the track.