Three vehicles in the Exit 2 commuter lot in Danbury were damaged Thursday night during a car accident.  A 30-year-old Waterbury man drove off the westbound I-84 ramp, crashing into two parked, unoccupied vehicles.  The driver and his 31-year old passenger were transported to the hospital for treatment of suspected minor injuries.  The driver was issued an infraction for failure to maintain lane.  All three vehicles were towed form the scene.