Electric cars with GPS audio guides are now available in Lisbon. Visitors can follow a range of themed itineraries or make their own. You could follow the route of Tram 28, for example, which passes the Portuguese capital’s best known sights, or concentrate on the city’s Moorish heritage. Prices vary but these two tours cost €29 for 1hr and €34 die 1hrs 30mins respectively – with €15 extra for each additional hour. Information at www.lisbonecotours.com.