A Methuen man who got a traffic citation for driving his car into the back of a city fire truck three years ago is suing the city for damages he suffered after getting injured in the crash. Maximillion Piccolomini blames the injuries and emotional distress he suffered from the accident on firefighter John Paintigini, who he said left the fire truck parked in the travel lane of Lowell Street in order to buy an ice cream, according to a lawsuit filed in Essex County Superior Court.