>From a link in the "OBDLink WiFi" topic:

"This topic kind of reminds me of a thing my father was involved with many=
=20
years ago before I was born - in the early 1950's. Goodyear Aerospace in=20
Arizona (a division of Goodyear Tire and Rubber) made a road (test track)=20
that had many parallel groves cut into it like groves of a record player.=20
After the concrete road was poured, a big machine with many little grove=20
making wires trailing behind it would go over the wet concrete and make man=
y=20
little parallel cuts in the concrete effectively making a "record track" fo=
r=20
tires that traveled over it. The reason my father was involved was that he=
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had a very low frequency loud voice that was perfect for recording messages=
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that were to be sent to drivers driving over this road. When someone would=
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drive over this road, their tires would act like the needle of a record=20
player and would vibrate in time with my father's voice that was scratched=
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into the concrete sections of this road. There were simple test messages in=
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the road like: "Stop ahead" and "Speed Limit 30 Miles Per Hour" and "You ar=
e=20
driving off the road!" and "Wrong Way" that made no sense when driven over=
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backwards. Goodyear tested it for many years and found out that: 1. It=20
startled drivers way too much - (The GOD thing). 2. It caused tires (of the=
=20
time) to have less traction in wet weather conditions causing skidding. 3.=
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Induced vibration in cars that led to skidding. With all of these reasons,=
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Goodyear abandoned the project in the 60's but the test track still exists=
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somewhere near Phoenix Arizona as I vaguely remember my father driving my=20
family around the thing when I was but a wee little kid. I remember his=20
voice coming from the tires - very loudly and clearly I might add - with a=
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slight echo in it because the front tire would play the track just ahead of=
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the back tire - making it sound very GOD like and kind of spooky.
-hosehead, Aug 08 2002
"

Does anyone know whether the track still exists? I live in Phoenix and neve=
r=20
heard of it, but it's just way too cool!

Vitaliy
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