Austin Bomber Commits Suicide:  NBC News reports that 24-year-old Mark Anthony Conditt, who had terrorized the Texas capital by setting off bombs in different parts of the city, blew himself up in his car early this morning as a SWAT team approached it.  Police released details about the bombings that led them to Conditt, including exotic batteries used in the bombs, recovered cell phone transmissions in areas where bombs exploded, and security video of a man in a wig dropping off a package at a FedEx facility, which detonated Tuesday.  In the end, police were able to track Conditt's cellphone and were following his Jeep on Interstate 35 at 2:00 am, when he pulled over and detonated a bomb.  Detectives have not determined a motive for the bombings.