The key to the locking nut on my 2003 toyota rav4 is missing. I have searched for the last 2 hours for ways to get it off and almost everything I can find says take it somewhere and have it removed or use a 7 point socket to remove it. It is cylindrical with a pattern on the inside so there is nothing for a socket to grip and I have a flat so I can't take it anywhere. Please help because my car is sitting on the side of the highway until I can get the locking lug nut off.