The TGV (train à grane vitesse, French for "high-speed train") is France's high-speed rail service developed by GEC-Alsthom (now Alstom) and SNCF, the French national rail operator, and operated primarily by SNCF. Following the inaugural TGV service between Paris and Lyon in 1981, the TGV network, centred on Paris, has expanded to connect cities across France and in adjacent countries. It holds the record for the fastest wheeled train, having reached 574.8 km/h (357 mph) on 3 April 2007, and also holds the world's highest average speed for a regular passenger service. TGV is a registered trademark of SNCF.