The Curious Case of a Gonzo GPS?!

The Puzzler

RAY: This is from my Open Road series and it was sent in by John Robinson.

He writes:

'I have always been a gadget nut. And when the first portable GPS units hit the market in early 2000, I just had to have one. Since then I have upgraded 5 or 6 times.

We travel a lot in our RV and it's perfect for exploring new and exciting lands. I have never experienced any technical problems with any of the units until now.

After returning from a trip and resting for a week we headed out on a new adventure. When I went to reset the trip information on the GPS, I discovered what I believed to be a major problem. The GPS was telling me I had driven some 28 hours on the last trip, my maximum speed was 72 mph, but my average speed was 159 mph.

I don't know a whole lot about math, but I do know you can't have an average speed that's greater than the maximum speed. So I reset the unit. I even contacted the manufacturer, ran lots of diagnostics and the unit seemed to perform perfectly.

As a last resort I used that time-honored method of throwing it down the stairs. When I went to pick up the pieces, I figured out what had happened and there was nothing wrong with the unit or its calculations. What could possibly account for this strange behavior of my GPS?'

Think you know? Drop Ray a note!

[ Car Talk Puzzler ]

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