Jimmie Johnson called winning a record-tying seventh NASCAR Sprint Cup title ''insane'' Friday night, while Tony Stewart was sent off into retirement and Dale Earnhardt Jr. told his adoring fans at the season-ending banquet that he'll be ready to race in 2017. Johnson's dramatic victory in the finale last month at Homestead moved him into a tie with Richard Petty and Dale Earnhardt for the most series championships. Johnson was introduced by 23-time Olympic gold medalist swimmer Michael Phelps at the Wynn Las Vegas. More...