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"With subscriber growth tied to the auto industry, it&amp;#39;s important for investors to keep their eye on how much revenue Sirius XM can generate from its existing customers. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.fool.com/investing/general/2014/05/23/with-higher-prices-will-sirius-xm-customers-stick.aspx>