"Trying to drive his car home like many times before a driver suddenly noticed a dramatic loss of speed and steerability along with his car making strange noises. After first trying to ignore the problem for a while he finally lost his patience and decided to track down the problem. He got himself one of those high-tech car diagnostics units, plugged it in and took some test drives to get measurements. Reading through zillions of diagnostics messages, one cought his attraction which stated that there might be an unusually high difference in wheel speed between the front wheels. After much guessing and stabbing in the dark finally a message from the anti-lock-brake system cought his attrraction. Actually there wasn't anything wrong with the brake system, but the message brought to his mind the fact that his car had one at all, and for some reason, mostly intuition, he decided that he could have a look at its mechanical parts. Inspecting the front wheels he found that one had fallen off. He attached his reserve wheel and drove off, problem fixed. Beeing very delighted, he told the world about the usefulness of car diagnostics computers, and that everyone should get himself one and carry it all day."
Still unresolved remains the question why the wheel had fallen off...
