Have you ever driven home and arrived at your destination without remembering how you got there? No, you weren’t abducted by aliens or taken over by your alternate persona. You simply experienced highway hypnosis. Highway hypnosis or white line fever is a trance-like state under which a person drives a motor vehicle in a normal, safe manner yet has no recollection of having done so. Drivers experiencing highway hypnosis may zone out for short distances or hundreds of miles.