In one respect, Sunday's Sprint Cup race at Las Vegas felt like one step forward and two steps back for NASCAR and its continuing efforts to improve the racing at the highest level of the sport. One week removed from an excellent lower-downforce debut at Atlanta, the Kobalt Tools 400...

Carl Edwards has called on NASCAR to make its low-downforce configuration a significant part of the 2016 Sprint Cup.Comprising a lower rear spoiler, shorter front splitter and gripper tires, a lower-downforce rules package was introduced at Kentucky in July, and featured again at Darlington last Sunday, in a race won...

Audi's full-season World Endurance Championship entries will both run in low-downforce Le Mans specification in Saturday's Spa round.The German manufacturer has confirmed that it will run two of its R18 e-tron quattros in the new aerodynamic configuration that will be racing for the first time in the second round of...