The active holder charges your Moto G when it is in the holder. If you have a car with USB interface, you can disconnect the cig-plug from the holder's cable in order to get a USB-cable to connect directly to the USB connector in your vehicle.
The holder is attached onto a tilt swivel and can be adjusted in order to avoid light reflection. Connects to the vehicle's cigarette lighter socket, 12/24 Volt, attach onto a ProClip mounting platform.