A few weeks ago I was driving on the freeway. It was my morning trek to work. Speed limit is 65 and I had my cruise set for the usual 70. Anyway, I'm driving along and I notice a car gaining on me. I estimated its speed at over 90 by how quick it caught up to me. It proceeded to ride up my ass behind me where it stayed there. They were no further than 2-3 car lengths behind me and stayed there for 4-5 miles. I felt this was a very uncomfortable distance since deer frequently cross this freeway with little notice. There was no doubt in my mind that if I were to apply the brakes this car would have ran into the back of me causing a major accident. I held my speed. It didn't back off or pass me until it turned off on a city off ramp. What should I have done? Should I have recorded their plate number and given it to local authorities? Should I have tapped my brakes to alert them of the danger they were creating? Or slowed down to let them know I wanted them to pass?