Just be aware of people around you.
I've had this happen to me so many times, driving a car, and on my bike. I just lay on the horn, except with the bike where I can move over the entire lane and accellerate away. I had one time where the car was so close I punched the guy's windshield.
But just keep in mind, if you don't hit them, they will drive off while you have yourself a single car accident. Since you drive a souped up car, everyone will automatically assume you were street racing, the cops will give you a careless, and your insurance would screw you over.