CHARLOTTE, N.C. (AP) — A memorial service is planned for Friday in Charlotte for former NASCAR driver Greg Biffle, his family and others who were killed in a plane crash last month. The service, which is open to the public and will be livestreamed on NASCAR platforms, was scheduled to begin at 11 a.m. EST at Bojangles Coliseum. Biffle was among seven killed along with his wife, Cristina, and children Ryder, 5, and Emma, 14, when the plane crashed as it returned to the airport in Statesville,