Seven-time Nascar champion Jimmie Johnson will not race this weekend at the Chicago street course when the Cup Series makes its debut there. Police are investigating the shooting deaths of his wife Chandra’s parents and her nephew. The bodies of 69-year old Jack Janway, his 68-year old wife Terry, and 11-year old Dalton Janway were discovered Monday at their home in Oklahoma. It is believed to be a murder-suicide. Johnson’s race team, Legacy Motorsports, has withdrawn their #84 entry this weekend.