three o'clock
`` Step right in , Mister Sampson , '' he says . `` We 'll run around the roads here and -- '' `` We 'll do nothing of the sort ! '' snaps Sampson . `` I 've got to be at my office by three o'clock and you can drive me down there . In that way I 'll be wasting no time and I can see what your car can do through traffic as well as on the road . '' `` Elegant ! '' says Alex. `` Step right in . ''