NASCAR: Heat caused Next-Gen Cup cars to fail inspection

It was a curious sight Friday afternoon at Talladega Superspeedway.

A cloudless day and several umbrellas in the Cup garage shading … cars.

Such is the wacky world of racing. With temperatures in the lower 80s, the sun’s glare causes the Lexan windshields to expand enough that it can impact if a car passes inspection. In the past, teams had covers or even put ice on the windshields to keep them cool before such ploys were outlawed by NASCAR.  — NBC Sports —