Wheel locks...no key. Any ideas..?

Two tricks I have used on wheel locks with no key, #1, find a cheap socket that is just to small to fit (but fits inside the free spinning collar ) and try to pound it on with a big hammer ( if the inner part has contours on the outside ), if the inner part is smooth on the outside, (often if smooth they are also tapered ) take a socket and an impact wrench, hold the socket on the smooth taper and run the impact for about 30 seconds, ( this gets the socket hot making it expand slightly ) let it stop but hold the socket tight on the locking nut for about 30-60 seconds so it cools slightly, then the socket will be wedged tightly on the locking nut and you can remove the nut! To remove the socket, just hand thread the nut back on 5 or 6 threads and using a breaker bar tip the socket sideways.

This will ruin the socket for any other use but keep it around in case you ( or one of your friends ) ever run into this problem again. I used to work at a shop that did a lot of work on insurance cars and we rarely got the lug nut keys with the car, so I got real good at this.