NASCAR returns to NBC this weekend

On Saturday, the U.S.A. celebrates its 239th birthday. And NBC celebrates the return of NASCAR. The auto-racing juggernaut comes back to NBC after a nine-year absence, with Saturday night’s Subway Firecracker 250 on NBCSN (7:30 p.m. ET) and Sunday’s Coke Zero 400 on NBC (7:45 p.m. ET). Both races come from the Daytona International Speedway.…