FRYEBURG – Both a naked motorist and her passenger face drunken-driving charges after an incident that began with a traffic stop for speeding and ended with the passenger behind the wheel during a 7-mile chase.

The episode unfolded Sunday night when a police officer stopped a Volvo for speeding and discovered that the driver was wearing no clothes.

Because the motorist said she needed to use the bathroom, the officer allowed her to follow his cruiser to a campground. Instead, her passenger took the wheel and led police on a chase that ended on Main Street in Fryeburg, police said.

Douglas H. Litchfield, 59, and Patricia Buck, 61, both of Harrison, were charged with drunken driving and driving to endanger, police said.

The pair said they had been in the woods and Buck’s clothes had washed away in a stream, according to Fryeburg police administrator Ann Perante.

The vehicle was registered in Virginia. Although Litchfield had a suspended Maine license, he possessed a valid Virginia license, police said.