Yep, i can vouch for the 12 V coolers for the road. You can save tons by shopping at supermarkets along the way (and also load up on local goodies along the way:texas shaped chipped, REAL salsa from Austin, Shiner Bock, etc.) I'd also recommend getting one of those rechargeable battery jumpers with the 12V plug-it lets you keep running the 12V frig even when you are in the desert away from power. Most of the frig's also come with (or have available for purchase) a 110 AC adaptor for the wall socket. One more tip... never eat sushi from a truck stop.