'NASCAR: Driven to Extremes'
Airs Sunday, Oct. 16, at 10 p.m. (ET)
CNN senior medical correspondent Dr. Sanjay Gupta follows NASCAR drivers on and off the track to examine safety and athletic performance in America’s No. 1 spectator sport. "NASCAR: Driven to Extremes," the latest Dr. Sanjay GuptaPrimetime Special, debuts on Sunday, Oct. 16, on CNN/U.S. at 10 p.m. (ET).