general problems of the 1999 Subaru Legacy

I was stopped at the intersection of 23rd and union in seattle on my way to work. I was going north. It was about 7:40 a. M. On Tuesday, 5/20/2014. I looked in my rearview mirror and saw a car coming up behind me and it looked like it was going to fast to stop. The driver didn't even seem to slow down. My car was hit pretty hard. My airbag did not deploy. As far as I can recall my head or face did not hit the steering wheel. We got out of our cars. I did not see a license plate on his car either on the front or back of his car. I think that he said that he did not have his driver license. . . I'm not quite sure now. His car was a orange reddish mercedes, it looked like an SUV. It had tan interior. We moved our cars to the gas station parking lot to talk about the accident. My neck felt sore and painful. I decided to go to work as I drove my side began to hurt a lot, so I went to the doctor. There are new scratches on my bumper and other than that I can't tell if there is any other damage to the car.