 As of 2010, the Asia-Pacific region led the global market with a share of 54%.In Europe they are popular in Italy (730,000), Ukraine (200,000), Armenia (101,352), Russia (100,000) and Germany (91,500), and they are becoming more so as various manufacturers produce factory made cars, buses, vans and heavy vehicles.In the United States CNG powered buses are the favorite choice of several public transit agencies, with an estimated CNG bus fleet of some 130,000.