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."