Car booking app Careem has launched a new OOH campaign to announce a special promotion in a joint campaign with MasterCard. The ads feature the brand’s regular green backgrounds, with artwork depicting a mobile phone and a MasterCard – straightforward references to both brands. The ad copy informs of a discount of 20% when using the card to pay for your rides, and provides the promo code. Launched during the first week of December, the campaign has extended since and can be seen on uni-poles, as well as Gates, on the highest-trafficked roads of Greater Cairo.