Should I sue the driver who clearly is at fault for personal injury?

The guy who rear ended me did so at a red light. The speed limit was 35 and he hit me at a recorded 45 mph. My car is now completely unrepairable and I had to be transported by ambulance (had also been unconscious till I was pulled out of the car). The man who hit me tried to drive off but luckily there were two police officers who saw the entire accident and caught him. I currently have extremely bad whiplash, a bruised lung and two fractured ribs. The man who hit me apparently had also been drinking but was not declared impaired. Am I in a good position to sue?