Pretty sure there has been more passing on short ovals and road courses this year vs. last. I think the aero package still needs some work to get a bit more balance in traffic. Drivers have said that their cars are fine in clean air, then have to crank in a bunch of front wing when they get in traffic. Seems to me that the current spec has done pretty much what it was intended to do: increase passing on short courses and reduce pack racing on bigger ovals.
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