Artificial intelligence, with help from bright college minds worldwide, continues to drive Indy-style open-wheel cars in 170-mph wheel-to-wheel competition.
The alternate tire rules are intended to add more strategy and hopefully excitement for the finale as Alex Palou looks to lock down his third NTT IndyCar Series title.
Past champion Jack Beckman is driving for injured John Force this week at U.S. Nationals and is trying to hand the 16-time champion another Funny Car title.