I was wondering if there is any power adapter which can be used to output 110V AC power from the car. I saw something in radioshack which converts the 12V DC from the lighter socket to 110V AC (~60W); however, my SA told us that the wattage is too high and it's going to burn the wire of the socket. Is there any place in the car which can safely output 110V AC power with enough wattage, say ~100W for a laptop, etc. I found a BMW adapter (part # 82 11 0 004 073) which is plugged in the flash light socket in the glove compartment. I wondering how much the wattage is for that socket. Thanks a lot.