Try your best to get as much identifying information as possible. Safely take pictures of the license plates and make of the vehicle. Other features such as window tint, company vehicle, and rims can be helpful for the police to find the driver. Immediately call the police and report all information to them. If you can take note of the time, street name, and surrounding vehicles it will be helpful for the police.Try to write down the physical features of the driver so you do not forget them if questioned.