[ExI] Wind-powered car goes down wind faster than the wind

[BillK]

A wind-powered car has been clocked in the US traveling down wind
faster than the wind. In a recent run at New Jerusalem in Tracy,
California, the car reached a top speed of more than 2.85 times faster
than the wind blowing at the time (13.5 mph) powered by the wind
itself. The run should now settle the DWFTTW (down wind faster than
the wind) debate that has been raging for some time on the Internet
about whether or not such a feat was possible.

<http://www.physorg.com/news194851568.html>

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Note the 'downwind' bit.
Yachts can already exceed wind speed when tacking, but not downwind,
even when using a spinnaker.


BillK