STAMFORD — A motorcyclist is seriously injured after police say he crashed into a car on Interstate-95 Southbound on Saturday afternoon. State police say Jason Coran Gadson, 31, of Norwalk, was driving “in a reckless manner” when he hit the back of a Ford Explorer near Exit 7 on I-95. Gadson suffered life-threatening injuries and was transported to Stamford Hospital, according to police. The driver and passenger in the Ford Explorer were not injured. Gadson was issued a misdemeanor summons and charged with reckless operation, misuse of markers, operating while under suspension, operating a motorcycle without insurance, unregistered vehicle and following too close. Gadson is scheduled to appear in Stamford Court on Aug.