Concussion lingers for former NASCAR champion Kurt Busch


              FILE - Kurt Busch celebrates after winning a NASCAR Cup Series auto race Sunday, Sept. 27, 2020, in Las Vegas. Busch's career was prematurely curtailed from the lingering effects of a concussion suffered in a wreck during qualifying last summer at Pocono Raceway. (AP Photo/Isaac Brekken, File)
            
              FILE - Kurt Busch (45) spins as he takes part in qualifying for the NASCAR Cup Series at Pocono Raceway, Saturday, July 23, 2022 in Long Pond, Pa. Busch's career was prematurely curtailed from the lingering effects of a concussion suffered in the incident during qualifying last summer at Pocono Raceway.  (AP Photo/Matt Slocum, File)
            
              FILE - Kurt Busch celebrates in Victory Lane after winning the NASCAR Daytona 500 auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 26, 2017. Busch's career was prematurely curtailed from the lingering effects of a concussion suffered in a wreck during qualifying last summer at Pocono Raceway. (AP Photo/Chuck Burton, File)
            
              FILE -Kurt Busch (45) pits during a NASCAR Cup Series auto race at World Wide Technology Raceway, Sunday, June 5, 2022, in Madison, Ill. NASCAR’s next 75 years almost certainly will include at least a partially electric vehicle turning laps at Daytona International Speedway. It’s unfathomable to some, unconscionable to others. (AP Photo/Jeff Roberson, File)
Concussion lingers for former NASCAR champion Kurt Busch