The USB port in your car can do more than just charge your phone - here are three things you can plug in on your next road ...

To determine the power, current, and voltage of a USB socket, Windows on-board tools, freeware, and test sticks from $10 can be used.

To run the app, you must provide access to this data. Once this step is complete, you must connect your phone to the USB port in the car, regardless of the available Android Auto version.