2008-06-11 - Things learned on track transfers to cars on road
Motorsports in the United States began as a way to prove one brand of automobile against another. The cars they used back then were, indeed, production vehicles, and it was all about speed, reliability and proving whose mousetrap was the better.
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http://rss.nascar.com/~r/rss/news_business/~3/309792452/index.html