The man, William Kremer, apparently jumped onto the car and held on as girlfriend Stacey Sperrazza wove along Route 202 with the car's air bag inflated, police said. She eventually stopped the car and hit him with it, police said.
Sperrazza, 37, of Stony Point, was arrested on a felony charge of reckless endangerment. Kremer, 42, of Haverstraw, was arrested on a misdemeanor assault charge.
No telephone numbers could be found for the two. Police had no immediate information early Sunday on whether they had lawyers.
He was treated for a foot injury, she for eye and head wounds, police said.