Flying Lizard Motorsports is returning to Willows, California next month to compete in their fifth consecutive NASA 25 Hours of Thunderhill Presented by HAWK Performance. The reigning champions of the last four years have put together a last minute effort to defend their title, entering an Audi R8 GT4 in the GT Challenge class.

Chinese internet sensation Liu Zexuan has joined the Audi Sport R8 LMS Cup’s eighth season to compete in the GT4 Cup. The 30 year-old driver will be aiming to build on his impressive Cup debut in 2018 with Absolute Racing, when he secured back-to-back wins in Shanghai. Liu has become an online celebrity in China, appearing in a number of popular online reality shows, winning himself a legion of fans and followers.