[AtomicLabMonkey]

They've needed to do the same damned thing for years, and they refuse to do it - take off the restrictor plates, and give the bodies more drag & less downforce to keep the lap speeds down. There were great races at Talladega & Daytona 20 years ago before plates, and they were run with boxy, draggy cars. It's not like there have been any other fundamental advances in Cup car design; the big gains in speed have mostly come from aerodynamics because everything else has been so limited by the rulebook.