<prompt> Human: My boyfriend and his friend were sitting at a stop sign one night when a a drunk driver rear ended them. The driver then fled, and they didnt get the plates on his car or anything. What are his options when we dont have the person who is at fault? He and his best friend were also injured and the car is beat up as well.  <response>: Not relevant, but how did they know the driver was drunk if he fled the scene? 