My friend got a $50,000 Roush 428R Mustang. I have no idea how he can afford it, but it's an amazing car. 1 of 200 made. here's a video of my other friend racing him in his 2003 GT Mustang. They raced for comparison's sake.
http://youtube.com/watch?v=CeL6G4Ey68U
video is during the night so you can't see shit, just the cars passing and the sounds of the exhausts/supercharger.