X 2000 is the brand name of Sweden's tilting 200 km/h high-speed train class X2, which is constructed by ADtranz and operated by SJ. It was launched in 1990 as a first-class only train with a meal included in the ticket price, and free use of the train's fax machine. There is a bistro on board that serves snack bar-style dishes. The trains were initially used sparingly to avoid breakdowns. From 1995 the trains were used more intensively and second class was introduced. The train's designated top speed is 210 km/h (but during a trial with double locomotive units in 1993 it reached 276 km/h), but the maximum allowed speed in regular traffic is 204 km/h (127 mph) since the signal system (and systems like the catenary) are not built for more for safety reasons, and as it shares the track with regular trains and as most of the lines it uses were built in the mid to late 19th century. The 19th century railways Stockholm-Göteborg/Malmö are relatively straight, since they were planned the shortest way without taking intermediate cities into account, and the landscape is relatively flat. Other 19th century railways are generally curvier. In comparison to other high-speed trains, the X2000 is not particularly fast; but compared to regular train services, it cuts journey time by about 25% - enough to make it competitive with airlines on many routes. It typically averages about 150 km/h (90 mph). The fastest part is Katrineholm - Skövde, a distance of 180 km (approximately 112 miles) that is covered in 1h 2min, resulting in an average speed of 174.2 km/h (108.74 mph). In 2000-2004, seven trains were operated by Linx on the lines Oslo-Gothenburg-Malmö-Copenhagen and Oslo-Stockholm. Linx was a joint venture between SJ and its Norwegian counterpart NSB. It was wound up when SJ wanted to move the trains to more profitable lines in Sweden. Low-fares airlines also played a part in siphoning off passengers from the comparatively slow Linx services, the main ones taking well in excess of three hours. All trains are equipped with wireless LANs for passenger access to the Internet and were repainted grey as of 2005. The trains also have electric power supply sockets at all seats in both first and second class. The trains have been fitted with repeaters to improve mobile phone reception. X2000 is a brand name for a number of train connections. Generally the X2 train is used, but because of lack of vehicles, relatively often (especially year 2009/2010) other train types are used, like X40 or Rc locomotive plus cars. These connections are called X2000 on the tickets anyway. The Regina is a Swedish model of electric multiple unit passenger train, manufactured by Bombardier Transportation (formerly ADtranz). It is used by the national passenger railway SJ along with numerous regional and private operators, in variants designated X50, X51, X52, X53 and X54, and in two- and three-carriage models. The Regina is wider than other Swedish trains; at 3450 mm, it allows five-across seating, increasing passenger capacity by 25%. The car body is built of stainless steel, with only bolsters and coupler pockets made of mild steel. The length is 5480 m, and the capacity 165-294 seats. A variant of the Regina is used in China as the CRH1. Top speeds of various models range from 180 km/h to 200 km/h (112 mph to 125 mph). As part of the Gröna tåget (the green train) project, a modified Regina set the Swedish rail-speed record of 303 km/h (188 mph) on 2008-09-14;[2] the goal is to reach 250 km/h (155 mph) in regular service.[3] The existing Regina units are short trains built for local and regional service, but in late 2007 it was announced that SJ were ordering twenty units furnished for inter-city service.[4] These trains, designated X55, will be used on the routes connecting Stockholm with Värmland and Dalarna[citation needed], allowing the displaced X 2000 units to be used instead to lengthen the busy trains running to Göteborg, Malmö, and Sundsvall.[5] These units will be four-carriage trains with a first-class section and an on-board bistro; they are to be delivered between April and August of 2010, with an option for another 20 units.