Got one of these for Xmas and already used it on a 400 mile trip for my Droid which gives me all my music, Google Maps & of course blue tooth phone. This little device lets the DW and I take our phones or tablets in any car or the G'Town that we have the steelie ball mounted to and add or remove it in less than a second. You can start with a single dash mount kit and then get any o the other pieces for different types of mounts or needs. It also lets the phone or tab or GPS directly adhere to any iron or steel surface...like a fridge. What a great idea!
Highly recommended and available on Amazon for a lot less than list price.