Coleman also makes (or made) a cooler that can keep food warm or cold, depending on how you make the connection to the power outlet (so I guess that actually makes it a cooler or a warmer). I have one and it's been great, especially for longer trips and tailgate parties. You do need to plug it in a day or so in advance to get it to temperature, but once there, it does a nice job. Runs off of the car battery or a household socket.