Ep 5. Episode 5

Arthur, Ford, Trillian and Zaphod are saved by the Galactic Police, and then knocked unconscious, when they wake up they find themselves at the Restaurant at the End of the Universe. They steal a totally black ship from the car park and go in to hyperspace, however, with the interior being completely black as well, the controls are illegible, and the ship is out of control and veering into a nearby sun!