I took my (now ex) girlfriend with me to Cal Speedway in my slightly Nismo'd 370Z. I wasn't really pushing too hard, but she lost her mind nonetheless. Made for a pretty decent video. There's a longer version on my YouTube page, along with a bunch of other real-world racing videos. Enjoy, my friends!! And feel free to spread it around the intarweb. Seems that just as many people dig it as do find it annoying...
The Girlfriend Test: Racing Edition - YouTube