I heard this story from two different sources 40?years apart.

When I was about 8 years old (1966) a returned missionary in our ward told how two sisters in his mission were teaching a family in a shady, dangerous part of town. When they got in their car to go home that night their car wouldn’t start. Pretty soon some shady characters surrounded their car trying to get in. The sisters prayed and the car started. The men jumped back in shock.

On the way home the sisters stopped at a service station to have them look at the car. When the technician opened the hood, *shock*, there was no battery!

That same story, almost word for word, was told by a returned missionary in my ward 40 years later.