My family and I used to take a lot of road trips when I was a kid. My dad was notorious for driving miles without stopping. He would fill his Stanely thermos with hot tea to help with the long drives. In case you're wondering, the green they use in all their products is called Hammertone Green. I just ordered mine and can't wait until it gets in. You can read about how the thermos came into existence on their website or this Wikipedia entry.
Bonus: Stanely flask