As soon as last week's NASCAR race at Indianapolis ended, drivers began talking publicly about an unusual amount of skew in the rear end of Jimmie Johnson's winning car.
Denny Hamlin called it "unique" and said the tires and rear body of the No. 48 car were "moving quite a bit."
"They figured out something that is obviously working well," he said at the time.
The chatter continued on Friday at Pocono Raceway, with several more drivers saying they also noticed something going on with Johnson's car.
"All the Hendrick cars have more yaw than the whole field," Kevin Harvick said. "They have done a good job doing some R&D to get the things that they need, but that didn't just happen last week. That has been going on for several weeks before we came here (at Pocono) to the first race.
"That is what this sport is all about is finding an advantage and making it work on the racetrack. They have done that."
NASCAR implemented a rule regarding the rear sway bars beginning at Kentucky, but that didn't seem to affect the Hendrick cars like everyone thought it would. There's apparently something else going on that Hendrick is doing to gain the advantage.
"Well, (it makes) you definitely go to work," Harvick said. "That is one of the things that we worked on in Michigan this week. They have got the garage scrambling a little bit right now to try and figure out how to achieve exactly what they are doing."
Greg Biffle said his Roush Fenway Racing team was "working hard on trying to figure out" how Hendrick was getting the cars to work like that and said the Roush organization gained knowledge about the rear suspension at both Indianapolis and the Michigan tire test this week.
"We have a little of it – maybe not what they had – but our own version of our rear suspension, working hard at it," he said. "... You look at the speeds now and we have three Roush cars right near the top. I think we are gaining on what they have or what we are doing is getting is closer."
Jeff Gordon, naturally, defended Hendrick Motorsports by saying one of the things the team does so well is to "go out there and push the limits constantly."
"You've got to understand that NASCAR has put us in a box," he said. "In that box, you have a lot less tools to work with, and so you've got to creatively get outside of that box. That's what I think Hendrick is doing right now."
That said, Gordon said he "didn't see anything that stood out to me over a lot of the other competitors" at Indianapolis. Some of the comments, he suggested, come when drivers are "getting beat and they don't like it."
"(They) want to try to bring attention to something that is probably not there," he said.