USB power in your car

I really don't know why someone didn't think of this before. With as many devices as there are out there that charge using a USB port, this could be really useful. 12 volt power extenders, aren't anything new. In fact I've got one in my car right now. But adding a USB charge port to the extender is sheer genius.

You can buy it here: VictorMall, though you will need to be able to read korean to decifer the site.
Found via Gizmodo: Seiko EM-49 Car Socket Power Strip