Spook Hill in Hainesville,Florida.(I think it is in Hainesville) I was
there one time.A sign said, park your vehicle on the line across the
road, shut the engine off, put it out of gear, watch your vehicle coast
uphill.I did that, (1971 Chevrolet van) my vehicle coasted a few feet
uphill.Of course, I know it was/is only an optical illusion.
cuhulin