The Spanish Newspaper El Mundo published recently in its "Innovadores" section an article about how Barcelona is becoming a reference for the “Smart Cties” movement. It was entitled: Las 'Smart Cities' mundiales miran hacia Barcelona. The work with piezoelectricity and piezoresistivity led by ICREA Prof. Gustau Catalan is useful to develop applications which will help drivers finding a free parking or the fastest route. Together with Xavi Marti, from IGS Research, they mention other applications to design smarter cities.
El Mundo Innovadores (3 March 2015)