Europe believes a sat-nav system that is independent of GPS but inter-operable with it will drive a multi-billion euro industry in which receivers find their way into many more markets - from consumer mobile devices such as cell phones to safety-critical applications such as guided trains and buses.
Whether it will be more supranational (as a single currency might suggest) or more inter-governmental (as the arrival of fiercely independent new members might foreshadow) is as yet hard to say.