How is it more advanced than all the racecars out there with carbon tubs, pushrod actuated dampers, very effective traction control and ABS at the limits of adhesion, lower center of gravity, active aero, forced induction powertrains that are more thermogenically efficient, hybrid systems, and carbon-ceramic brake discs?
NASCAR is very safe, I agree with that, but it terms of being "advanced" cars, they're still not. Just because we finally have aluminum wheels and independent rear suspension now does not mean the cars are advanced.
In terms of versatility, if what people are saying is true that this car is basically an IMSA GT3 car adapted for ovals, well then it isnt any more advanced than an IMSA GT3 car. The versatility part, since the cars are symmetrical now, is just coming from setup (alignment, weight ballast, wedge). You can setup even an F1 car for ovals if you gave it an asymmetrical setup to make it really good at left turns.