One minute it is just another white coach, sitting at the roadside outside the basilica in suburban Buenos Aires. The next, the driver is busy decking it out with yellow and white advertising hoardings, complete with images of Pope Francis, attached to the bus’ sides by magnetic strips, so as to prepare it to host the “circuito papal”.In the almost 12 months since his election, Pope Francis has graced many hoardings and magazine covers around the globe. His is undeniably the face of the moment. So it makes sense that here in his native Argentina, the city council in Buenos Aires is getting in on the act by making him the focal point of two three-hour sightseeing trips every day. Embarkation point is the front steps of the Basilica of San José de Flores, a grand ni