Batteries

I recently saw a distraught young lady weeping beside her car. "Do you need
some help?" I asked. She replied, "I knew I should have replaced the battery in
this remote door unlock thing, now I can't get into my car. Do you think they
[pointing to a distant convenience store] would
have a battery for this?" "Hmmm, I don�t know. Do you have an alarm, too?" I
asked. "No, just this remote 'thing,'" she answered, handing it and the car keys
to me. As I took the key and manually unlocked the door, I replied, "Why don't
you drive over there and check about the batteries it's a long walk."