Funny how trinick mentions racing. I got a police scanner detector for my car the other day. It detects three types of scanners. Laser, satellite and radio signal. And it detects them up to 3 miles away. I can get away with a lot of stuff now lol.
Be careful. I don't have a police scanner but I haven't had any problems yet. I've gotten lucky, though. A scanner isn't an excuse to stop scanning vigilantly for police, but an aid. Scanners don't ever work as well as advertised either, and you'll notice it goes off a lot more often than there are really cops.
Speaking of street racing: this 350z almost forgeted me up today. I was clearly faster than it, so I had gained a multiple car lead but caught up to the car in front of me so I put on my blinker to change lanes to go around it and avoid hitting it. The guy in the 350z hadn't been paying attention to me or something, because when I check my blind spot he's right there. I had to slam my brakes to avoid hitting the car in front of me, and it was no bueno. Probably the closest I've ever been to crashing into another vehicle.