Vile Bodies by Evelyn Waugh

Adam and Miss Runcible and Miles and Archie Schwert went up to the motor races in Archie Schwert's car. It was a long and cold drive. Miss Runcible wore trousers and Miles touched up his eyelashes in the dining-room of the hotel where they stopped for luncheon. So they were asked to leave. At the next hotel they made Miss Runcible stay outside, and brought her cold lamb and pickles in the car. Archie thought it would be nice to have champagne, and worried the wine waiter about dates (a subject which had always been repugnant to him). They spent a long time over luncheon because it was warm there, and they drank Kümmel over the fire until Miss Runcible came in very angrily to fetch them out.

Then Archie said he was too sleepy to drive any more, so Adam changed places with him and lost the way, and they travelled miles in the wrong direction down a limitless bypass road.