Interesting. What are the odds of this?

My wife locked herself of the 2007 Mazda CX-7 we made the mistake of buying. She left for town n a VERY agitated state. Just for kicks, I went in the house and grabbed a key for the old brown truck (1972 f-100) . The truck key opened the door -no problem! Btw, don't EVER buy a Mazda CX-7!!!