I think the idea genial !!! No matter what car, just in the cup holder and you're off. Even the thought of a separate USB connection makes me happy, so it is possible, for example, even a tablet cable charge. Nevertheless, remain 2 small criticisms: The current "input" via an adapter plug. The power input is indeed there, but why is it not gone here on Micro-USB? Would be much easier to find a different adapter or simply to extend the cable. My second point is that the device does not appear to get / take / abgibgt enough juice. If you have turned on Bluetooth, GPS and whatever else current pulls the phone, reduces the battery level while charging! This is all in all just too hot, so that the unit constantly switches off and signals an error. Have tried this in several cars and even exchanged the device, but the error remains. In connection with the sale price I would have told me honestly at this point expected a little more, let the price / performance ratio times ignored is the part but total more than OK !!!