SA Road Warrior, take out all-in-one travel mug French Press. Brew coffee right in the cup. Pretty slick. Good fit in your car holder drink. I used to not like beer, because seals are never good and the coffee is extracted and then why would the rebels fled into the coffee. The next thing I know I say this all the coffee grounds.
Fortunately, Bodum has solved the problem. They have a French Press trips are not only saving reasons down, but also keep the coffee hot. Just be sure to use the recipes provided and do not overload with too much ground coffee.
The disadvantage of this method is if you need more than 15 ounces of coffee on your way. In that case, mixed with something bigger at home and then find a solution flask.