My best buddy growing up, Rad Nool, would sometimes doze off if he was driving late at night. I called him "Narcoleptic Nool".
This was the 70's when long hair was in. So, ole Rad found a solution to his bouts of narcolepsy:
He'd roll his hair up in the window, and if he drifted off, his head would drop, pulling his hair, and woke him up!