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 un-locker. 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 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."