: I am looking for a french press coffee mug that is equipped to heat the water by plugging it into the 12V socket in a car. I want to be able to add water to the coffee in the mug. Plug it in. Plunge it. and have french pressed coffee. It seems like a simple principle... but I can't find any available. Does it not exist???!? Assuming that this is true... please recommend car coffee makers for someone traveling in a car. Thanks!!!