Approaching the halfway point of the Daytona 500, Jeff Gordon lost the engine in his No. 24 Chevrolet in a fiery explosion heading into Turn 3.
"I have a feeling that water-pressure gauge was not working properly," Gordon immediately radioed to his crew. "I have no idea where that came from.
"I'm sorry, guys. We had a good piece, and we were just taking our time to be there at the end."
After the caution for Gordon's car, there was another caution at lap 88 when Terry Labonte was punted coming out of Turn 4.
Drivers are scrambling as the halfway point of the Daytona 500 approaches, because weather is approaching and they're also racing for the $200,000 bonus money awarded to the driver who is leading at the halfway point.
Outside polesitter Greg Biffle is your current leader, followed by Martin Truex Jr.
Danica Patrick returned to the track multiple laps down after being collected in a lap 2 incident which also involved Jimmie Johnson, Trevor Bayne, Kurt Busch and others. Patrick is currently scored in the 40th position.