Can I charge my sony cybershot camera from a cigarette lighter in a car?

I am going travelling around the usa in a campervan. I have a sony cybershot camera and I can only charge the battery through mains electrics. Is there an adapter that you can put into a cigarette lighter that has a plug socket at the other end so I can plug in the charger? Thanks!|||You should be able to find one on eBay, as I have other sony devices which can be charged via the cigarette lighter in my car.