A man was driving along a narrow, dark and winding road when his car stuttered, shuddered and hiccuped, so he brought it to a halt.

Not knowing much about engines, he opened the bonnet and looked at it helplessly, praying for inspiration or a good Samaritan.

Suddenly, out of the gloom, a voice said, “Check the spark plugs.” He looked around, but all he could see was a white horse.

A little panicking, he still looked at the engine but did nothing. He heard it again, “Check the spark plugs.”

This time, with thundering heart, he did look at the spark plugs and noticed that a couple of the connectors appeared to have worked loose.

He quickly pressed them back in, restarted the car, and gratified to hear the engine purr, he hightailed it out of there.

A mile or so later, he saw a building with a sign that said it was a pub. He pulled up, went in and asked for a double brandy which he gulped down.

The barman asked why he was so upset, and the man recounted his saga. When he mentioned the voice and only a horse in sight, the barman asked, “Was it a white horse?”

“Why, yes, yes, it was. What do you know about it?”

The barman replied,”You’re very lucky. There is a black horse in the same field, knows nothing about cars.”