With the VRTP4N1 Power Inverter and FM Transmitter in your vehicle you can power a 110 volt household device such as a small TV or a Laptop or charge up a battery drill, just plug it into the 110v outlet. You can also charge a device that uses a USB charger like an iPod or a cell phone or a camera and with its built in FM transmitter you can broadcast your iPod music to your cars speakers. Get the VRTP4N1
power inverter with FM transmitter by Roadmaster for $39.95

Power Inverter with 110 VAC, USB 5VDC, 12 VDC & Audio Input and Digital LED Display
Plug in your AC Devices in your Car, Truck or SUV
Charges Portable Devices Including iPods, Laptops, Mobile Phones, Cameras and More!
Fully Adjustable Position Angle
Control Panel with 15 FM Station Presets:8 Low & 7 High
Digital Frequency Display