Connected cars are a rapidly expanding market in the US as more and more consumers utilize internet-connected and cloud-based services for things like music and navigation. While this is far from the first LTE-connected car announcement, AT&T's is probably the broadest-reaching to date, with the nation's 2nd largest wireless provider promising Mobile Share data integration with over 30 GM vehicles by the end of 2014.

By GM, that of course means the brand's major subsidiaries - Chevrolet, Buick, GMC, and Cadillac.

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