Case C-434/15: Judgment of the Court (Grand Chamber) of 20 December 2017 (request for a preliminary ruling from the Juzgado de lo Mercantil No 3 de Barcelona — Spain) — Asociación Profesional Élite Taxi v Uber Systems Spain SL (Reference for a preliminary ruling — Article 56 TFEU — Article 58(1) TFEU — Services in the field of transport — Directive 2006/123/EC — Services in the internal market — Directive 2000/31/EC — Directive 98/34/EC — Information society services — Intermediation service to connect, by means of a smartphone application and for remuneration, non-professional drivers using their own vehicle with persons who wish to make urban journeys — Requirement for authorisation)