In article <%JiVj.79$ll1.45@trndny06>, Jeff <kidsdoc2000@hotmail.com>
wrote:

> How do you know that the speeds that the cars were driven at had
> anything to do with these "strides"? And why would driving a car a
> particular speed cause this?
>
> I think you don't know what you're talking about.

Some people develop superstitions, and live their lives by those.

Car owners are especially susceptible.

Go by your owner's manual. Things do change over time, and things that
were appropriate back then don't apply now. But you'll never get over
the superstition.