Hypothermia is suspected in the death of a man found in his car Sunday afternoon in Milwaukee.  The man’s name hasn’t been released, but authorities say he was in his 50s and he was found behind his home at about 1:00 p-m.  Four hours later, the body of another man was found on the city’s south side.  That death is also suspected to have been caused by the extreme cold.  Autopsies will be done.  A wind chill warning is in effect for southeast Wisconsin through noon today.