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 unlocker.  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 dunno.  Do you have an alarm, too?" I asked.  
"No, just this remote 'thingy,'" 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."