From the Cars.com site:

FRAUD ALERT: DON'T FALL FOR INTERNET SCAMS.

• NEVER wire money via Western Union, Moneygram, etc. to purchase a car from someone overseas. You will most likely lose all your money.
• If a car is priced far below market value, it likely has a salvage title (meaning it was declared a total loss at some point) or is a fraud designed to lure bargain hunters.
• Cars.com does NOT participate in the transaction in any way. We do not collect deposits or payments, warehouse any vehicles, or verify the identity of any seller. If you see an e-mail purporting to involve Cars.com, please DO NOT RESPOND TO THE MESSAGE. Instead, please forward to [email protected].
  
  Even though the vast majority of listings are legitimate, there is no substitute for healthy skepticism. Don't let your guard down for a deal that sounds too good to be true, because it probably is.
  
  For more information, visit our Safe Buying & Selling blog or our Fraud Awareness tips

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2011 BMW X5 M
2009 Mercedes E63 AMG-FOR SALE or TRADE