An adored mom was mowed down and dragged to her death by a serial traffic offender in a horrifying late-night hit-and-run that has left a Florida seaside town reeling. Kjersten Aileen-Hermance Strang, 38, was riding her e-bike along 49th Street South, in Gulfport, around 10pm on Saturday when Xavier Omar Rigby, 22 slammed into her, hurling her onto the windshield of his Nissan Altima. Rigby was barreling along the road at a 'high rate of speed' when he slammed into the rear of Strang's bike.