Carl Edwards remains a hot topic in NASCAR, two weeks after his abrupt retirement as a full-time driver. Terry Smith, a political science professor at Columbia College, speculated in a Wednesday piece for KBIA's Talking Politics that Edwards will challenge U.S. Sen. Claire McCaskill in Missouri next year. Edwards came 10 laps away from winning his first Cup title in November, then announced his retirement two weeks ago with a year remaining on his contract with Joe Gibbs Racing. More...