CHARLOTTE, N.C. (AP) — NASCAR needed a makeover even before it got a chance to stand alone in the sporting world spotlight. The largest motorsports series in the U.S. had been planning sweeping changes for 2021 in hopes of creating improved energy, new viewers and a fresh approach to a staid schedule. The coronavirus pandemic put those plans on pause and NASCAR is now frantically trying to recover from a 10-week layoff. So far, the stock car series is succeeding. After three races in South Carolina, NASCAR shifts to Charlotte Motor Speedway riding a wave of momentum behind solid on-track competition.