I like math when it uses the $$$ sign.
Interestingly this topic WAS on nasioc.
http://forums.nasioc.com/forums/show...hreadid=416899
The last poster put some links of the searching he'd done -- and I found the original email/letter above had been embellished from the supposed 'original' account.
http://urbanlegends.about.com/librar...isecontrol.htm
http://www.snopes.com/autos/techno/wetroad.asp
http://www.breakthechain.org/exclusives/cruise.html
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Long story short -- don't use cruise control in slippery conditions (+ the other cautions in the owner's manual -- not when driving up/down a steep grade, on winding roads or in heavy traffic).