The 14th edition of the NASA 25 Hours of Thunderhill presented by Hawk Performance is shaping up to be the most competitive ever when it gets underway December 3-4.Professional drivers listed on the entry include: Bryan Herta, Colton Herta, Ryan Eversley, Al Unser Jr., Kyle Marcelli, Dion von Moltke, Colin...

The No. 52 JFC Racing Wolf, co-driven by IndyCar legend Al Unser Jr. and his son, led the United States Air Force (USAF) 25 Hours of Thunderhill at the six-hour mark. In the early going, Ivan Bellarosa had two off-track excursions while leading the race but handed over to Unser...

Al Unser Jr., his son Al Unser III and Ivan Bellarosa will co-drive with JFC Racing owner Miles Jackson at the NASA 25 Hour of Thunderhill, Dec. 7-8 in Willows, Calif. JFC will be running the new Wolf GB08S V8-powered prototype, produced in Italy. The return of Indy 500 winner...