sentences:  The United States is the leading market with 84,656 Volts delivered, followed by Canada with 5,023 Volts, and the Netherlands, the leading European market, with 4,976 Amperas and 1,065 units registered ., just over 10,000 Opel/Vauxhall Amperas had been sold in Europe plus about 1,750 Volts., the other top selling plug-in hybrids are the Mitsubishi Outlander P-HEV, with about 92,000 units sold, followed by the first generation Toyota Prius PHEV with about 75,000 units sold globally.