Even as General Motors (NYSE:GM) has brought models to market that include a Siri button, Apple (NASDAQ:AAPL) is continue to press for greater integration between smartphones and autos. Ford (NYSE:F) has long boasted the Sync System from Microsoft (NASDAQ:MSFT). An investigation of a few recent patents reveals that Apple is charging ahead.

In the video below, Fool.com contributor Doug Ehrman discusses the details of the patents.

Fool contributor Doug Ehrman has no position in any stocks mentioned. The Motley Fool recommends Apple, Ford, and General Motors. The Motley Fool owns shares of Apple, Ford, and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.