Vodafone Group Plc is a global telecommunications company headquartered in London, United Kingdom. It is the world's largest mobile telecommunications company measured by revenues and the world's second-largest measured by subscribers , with around 341 million proportionate subscribers as of November 2010. It operates networks in over 30 countries and has partner networks in over 40 additional countries. It owns 45% of Verizon Wireless, the largest mobile telecommunications company in the United States measured by subscribers.
The Madrid Metro is a metro system serving the city of Madrid, capital of Spain. The system is the sixth longest metro in the world though Madrid is approximately the fiftieth most populous metropolitan area in the world. Its fast growth in the last 20 years has also put it among the fastest growing networks in the world, rivalling many Asian metros such as the Shanghai Metro, Guangzhou Metro, Beijing Subway or the Delhi Metro. Unlike normal Spanish road and rail traffic, Madrid Metro trains use left-hand running on all lines due to historical reasons. The Madrid Metro operates every day from 6 am until 1:30 am.