I know this is a LONG shot but you may want to call McGard,hopefully they have an emergency line.
http://www.mcgard.com/custserv/
You should have a small little card that was included with your car(hopefully it's in your owner manual),it should have the key code if you ever need to order another one.
I dealt with McGard recently,I emailed an employee a pic of one of my three remaining locks( couldn't find my key card in my manual),they found out what key I needed,sent me it $26 later.
Good Luck!
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house