Along with changes to the size of the restrictor-plate and the pressure release valves of Cup cars, there is another change mandated by NASCAR that will affect racing at Talladega, Ala., next month.
In the technical bulletin issued to teams last week, there was a note that "the addition of lubricants to the rear bumper cover will not be permitted."
The change covers all tracks, but in reality lubricants on the rear bumper has been most commonly used this season at Talladega and Daytona to keep the pushing car from spinning the lead car in two-car drafting tandems.
Teams' inability to soften the blow likely is to add to their unwillingness to utilize the drafting method, or at least use it more sparingly.
Biffle laments fuel-mileage races
It isn't that Greg Biffle necessarily dislikes fuel-mileage races, he just dislikes how it can take everything a driver and team accomplished throughout a race and basically toss it out the window.
"It's frustrating because it's totally out of your control," Biffle said.
"It feels like, to a driver, no matter what it might be, that all of your effort, all of your hard work, all of your experience, all of your knowledge, ... means nothing - technically."
Biffle has had the fastest Ford this weekend and will start fourth today. He won this race three years ago.