The ride-hailing app, which expanded into Europe five years ago, has come under attack from established taxi companies and some EU countries because it is not bound by strict local licensing and safety rules which apply to some of its competitors.

Uber’s dispute with Barcelona’s main taxi operator, which in 2014 accused it of running an illegal taxi service via its UberPOP service, is seen as a landmark case which could lead the Court of Justice of the European Union (ECJ) to label it a transport company rather than a digital service.

That is the crux of the argument—is Uber a transport or digital company? Arguments can be made for both sides. I haven’t used a taxi since Uber and Lyft started offering their service. All the legal arguments aside, the app-based services are much better, friendlier, and professional than any taxi service I’ve ever used.