Broke my wheel lock

If you have a McGuard or so and the original code number, you call them up and they'll send you a new key next day air for 10 bucks+shipping. If not you can go to a wheel shop and they'll charge you for ~$15 per wheel to destroy it...
 
Don't get a new one . . . trash the other 3 before they break too. The ones that come with the GTs are cheap junk. Thieves have the tools to remove them in seconds (special sockets with internal cams and teeth), so the only "benefit" they provide is annoyance for you when you have to remove a wheel.