Apple is looking to expand into new product categories, but just what those categories may be is currently a mystery. However, according to a report from the San Francisco Chronicle, the answer might end up being very surprising — the paper claims that Apple is looking to expand into both medical devices and cars. The report is light on details, but the Chronicle claims that Apple is particularly interested in medicine, and is working with audio engineer Tomlinson Holman to develop a device that could predict heart attacks by listening to the sound of your blood. This isnt the first weve heard of Apples interest in medicine — last month some of Apples top executives reportedly met with the US Food and Drug Administration to discuss the potential for mobile medical applications.