 It also houses a center-hung Mitsubishi video display board that was the largest HDTV screen in the world at the time of their installation.It has since been surpassed in size by the Panasonic "Big Hoss" video board (218 feet (66 m) wide and 94.6 feet (28.8 m) tall) at Texas Motor Speedway.Glass doors, allowing each end zone to be opened, were designed and constructed by Dallas-based Haley-Greer glass systems.