From the Toys section:
Ever want an AC outlet in your car? Amazon currently has a 5-star rated inverter for automobiles for the lowest price we’ve ever seen, $35+ free shipping. This one also includes: separate USB power charging and cable, 300 watts of surge capacity, 175 watts peak power, 150 watts continuous power. Utilizes ICC Technology: Low Vehicle Battery Auto Shutdown, Prevents Overload or Short Circuit. A three year warranty also applies.