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Sources

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Gagne, Luc. "Top 10 Most Expensive Cars." Auto123.com. (June 10, 2010)http://www.auto123.com/en/news/car-news/top-10-most-expensive-classic-cars?artid=114320&pg=1
McCullough-Arfons, Shari. "1965 Shelby Daytona Cobra Coupe Sells for $7.25 million." Mecum Auctions. (June 10, 2010)http://mecum.com/news/news_detail.cfm?NEWS_ID=2102
McKeegan, Noel. "1957 Ferrari 250 Testa Rossa fetches world record $12.1 million at auction." Gizmag.com. (June 10, 2010)http://www.gizmag.com/1957-ferrari-250-testa-rossa-fetches-world-record-121-million-at-auction/11727/
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