Gas station coffee is a Rite. I am not a maniac, I use a burr grinder for locally & lightly roasted beans, and a v60. With an electric kettle that's about a five minute process, $1.30/300ml.

On the other hand, nothing beats an early morning pop-in to the 7/11, couple 24oz "Regular Roast" cups, slide the cardboard sleeves on, fit the lids, pack of non filtered Camels, and, as you say, a long trip in the car.