Interesting topic and many viewpoints...

I myself drive fast in my M3 on a daily basis, I'm a safe driver but that's not saying something could happen at any moment. I've been 152mph in my M3...before you jump to accuse me...it was on my way home from college, on a highway where I could see 20 miles in front of me and a couple miles behind me, I was alone in the car and there was not a car in sight, it was a clear blue day on a highway (midway down a hill so I could see the entire 20 miles). I enjoy driving fast BUT don't do it when someone is around or in my car. You can tell me I'm wrong to do it but if I crash (on the highway going 152mph) the only person that is going to die is myself. I enjoy driving fast and testing the limits of my car but I do it when there is not a person in sight.

As far as your girlfriend's driving, it's crazy and stupid, plain and simple. Weaving in a out of traffic is asking for an accident and passing in the right lane is VERY dangerous. I hope she changes her ways and doesn't hurt herself or others.