A drunk man picked the wrong vehicle for a nap yesterday morning when he stretched out on the front seat of a police employee's vehicle parked outside the Dunedin central police station.

The 30-year-old man was discovered about 9am, and was arrested and charged with unlawfully being a vehicle.

"He was drunk and wanted to sleep," Acting Senior Sergeant Ed Baker said.

He did not know how the man had got into the vehicle. The man would appear in Dunedin District Court this week.