While Harry is arrested in Langford, Ohio for driving a Mercedes Benz due to a law about buying, possessing, and driving only American-made vehicles, Mercedes had been producing vehicles in Tuscaloosa, Alabama since 1995. Without checking the identification plate on the vehicle or knowing the exact model in the show, it is possible that the Mercedes she was driving was actually produced in the United States, making the town's complaint against her false.
As part of the American-made vehicles only law, the police department would be in violation, as the Crown Victoria was produced by Ford Canada alongside the Grand Marquis at St. Thomas Assembly in Southwold, Ontario. The police car shown is a Crown Victoria Interceptor.