At least one "Christmas Vacation" fan was driving on New Jersey's Garden State Parkway Thursday.
Someone changed a sign on the highway's exit for Clark and Westfield to read "Clark Griswold."
Griswold is the father character played by Chevy Chase in the Christmas cult classic.
State Police spokesman Sgt. Gregory Williams confirms photos of the sign posted on social media are real.
Williams says the taped-on Griswold sign at the highway's exit 135 was later removed by the Turnpike Authority.