A taxi is a vehicle and according to the dictionary, a vehicle is 'a thing used for transporting people or goods, such as a car, lorry or cart'. It's pretty clear that a taxi is not the Jeremy Kyle set then. Neither is it a mobile Relate counselling room, nor your own living room for that matter. Which is why you shouldn't mistake sitting in a cab for an opportunity to remind your other half of all the things you hate about them, their family and all of their friends. Or a chance for interrogation over that pornographic text they've just been sent by their ex.