P had a car collision with X that meant P’s car needed a respray. He then collided with D, through D’s negligence, which would of itself have necessitated a respray. P sued D for the cost of a respray. CA ruled that since P’s car already needed a respray, the need for it did not flow from D’s negligence and therefore he would not be liable. Lord Evershed MR says to allow P to claim for damage that merely “would have” been caused by D in other circumstances is absurd: suppose A chips my windscreen so I have to get a new one and then you chip it: surely you shouldn’t compensate me because there is no extra damage caused by your action.