Last Summer, my wife and I went to a fireworks stand in Fort Collins.  It was sweltering outside, the fireworks tent provided no relief...and I locked my keys in the car.  It was at least 45 minutes before the locksmith showed up to rescue us.  In that sweaty, panting time spent waiting, I vowed I would never lock my keys in the car again.

And here's how I manage it.  I honestly don't know why I never thought of this sooner.  I mean, what good is a spare key sitting at home, right?