When you intentionally drive without your headlights to screw with the person in front of you. They cannot see you, like a ghost. Also known as phantom.
Dude you're crazy, you've been going ghost so long I don't even know where the road is.
Staying under the radar for a while.
Person 1: Hey, have you seen John lately?
Person 2: No man, he went ghost, I haven't seen him in weeks.
Person 3: Dude, I came home shitfaced last night.
Person 4: Damn, what did your parents do?
Person 3: They're pissed. I guess I'm going ghost for a while.