A 43-year-old man was critically injured when the car he was driving struck a parked car on School Street just after 3:30 a.m. Saturday.  The man's vehicle was thrown about 30 feet onto the School Street offramp on the H-1 freeway in the westbound direction. Police closed the offramp and School Street between Nuuanu Avenue and Aala Street, while they conducted their investigation. The road and offramp were reopened just before 6 a.m.