An easy way to charge your USB electronics safety in your car.

over9000 2.1 Amp Power Adapter. This car gadget was designed by ThinkGeek to charge any USB-compatible device, including iPads. Connect your device (via its USB cable) & plug the over9000 into the cigarette lighter port. The built-in data chip will spoof (determine) the connection necessary to charge your device properly. As a safety message, the over9000 will also disable the USB charger in case of power surges or other problems. Other cool features include: A 3.0 amp spike capability that can bring a completely dead iPad battery back to life.  / The power switch lets you keep over9000 connected without drawing power from your older car's battery if it's not running. / The cool blue glow of the over9000's LED means you can plug in devices without having to turn on the dome light. / Low profile design keeps the charger out of the way. $19.99.

http://www.thinkgeek.com/product/eea9/?pfm=Search&=over9000%20compact%202.1%20amp%20usb%20car%20power%20adapter