You’d think that this would happen.
Ghosthiking
For as long as there have been private automobiles, there have been stories about people picking up hitchhikers at night, traveling with them for a while, then discovering that the hitchhiker was a ghost! Sometimes the driver figured it out while the ghost was still in the car. Sometimes the driver found out afterwards. These are spooky stories, of course: people heard them and thought There are ghosts out there, and sometimes someone like me will meet one.
However, at some point a ghost heard this story and thought, Hold on. I can be driven places? In cars?