Are you looking for iphone cell phone car charger ? Consider USB Travel Charger w/ Black Border for iPhone (for Apple iPhone 3G from iPhone 3GS ) meritline.com.
I bought one from meritline, it is amazing. Price is $3.99 with free shipping Once you order it takes atleast 2 weeks to get the cell phone car charger because product will be shipped from outside the country( mine was shipped from Singapore).
You can use this charger in car and as well as in electirc outlet ( home or office,etc)
This car usb charger is lightweight and easy to carry while traveling. This charger is a must!
USB Data Cable
USB Travel Charger
[image via meritline.com]