German cuisine varies from region to region. The southern regions of Bavaria and Swabia, for instance, share a culinary culture with Switzerland and Austria. In all regions, meat is often eaten in sausage form. Organic food has gained a market share of ca. 2%, and is expected to increase further. Although wine is becoming more popular in many parts of Germany, the national alcoholic drink is beer. German beer consumption per person is declining, but at 121.4 litres in 2009 it is still among the highest in the world. The Michelin Guide of 2012 has awarded nine restaurants in Germany three stars, the highest designation, while 32 more received two stars and 208 with one star. German restaurants have become the world's second-most decorated after France.With its central position in Europe, Germany is a transport hub for the continent. This is reflected in one of the world’s largest and most sophisticated transportation systems. Like its neighbours in Western Europe, Germany's road network is amongst the densest in the world. The motorway (Autobahn) network ranks as the third-largest worldwide in length and is known for its lack of a general speed limit. Germany has established a polycentric network of high-speed trains. The InterCityExpress or ICE network of the Deutsche Bahn serves major German cities as well as destinations in neighbouring countries with speeds up to 300 kph (186 mph). The largest German airports are Frankfurt Airport and Munich Airport, both hubs of Lufthansa, while Air Berlin has hubs at Berlin Tegel and Düsseldorf. Other major airports include Berlin Schönefeld, Hamburg, Cologne/Bonn and Leipzig/Halle. Both airports in Berlin will be consolidated at a site adjacent to Berlin Schönefeld, which will become Berlin Brandenburg Airport. The Port of Hamburg is one of the top twenty largest container ports in the world.