Since iknow only one more driving anime and you said W_6 was close i will make a terrible guess and say Ex-driver, but i seriously doubt that will be it.
So just to post another posibility that came to mind on a wild hunch i will also add a guess of Cowboy BeBop
Eat and sleep whenever you can, because one can never know when it will be possible again.
Not a real quote but deeply inspired by works from Erich Maria Remarque
A: "A human? What kind of creature is a human?" B: "I've only ever heard of them in fairy tales, but I hear they have really long necks." A: "Really?" B: "They have fur all over their bodies, walk on four legs and have really beady eyes." A: "Sounds terrifying!"