A man was injured Wednesday after the bus he was driving slammed into a tree in Suisun City. The crash occurred around 2:40 p.m. at Railroad Avenue and Birchwood Drive. Suisun City firefighters arrived on scene to find the driver, the only occupant of the bus, pinned inside the vehicle. Crews managed to extricate the victim and he was transported vis MedicAmbulance to NorthBay Medical Center. He reportedly suffered major injuries. Fairfield Fire and Travis Air Force Base Fire lent aid.