Android (operating system) store, and by September 2013, one billion Android devices have been activated. , the Google Play store has over 2.7 million Android applications published, and , apps have been downloaded more than 65 billion times. The operating system's success has made it a target for patent litigation as part of the so-called "smartphone wars" between technology companies. Android devices account for more than half of smartphone sales in most markets, including the US, while "only in Japan was Apple on top" (September–November 2013 numbers). At the end of 2013, over 1.5 billion Android smartphones have been sold in the four
Plug-in electric vehicles in California Annual registrations of plug-in electric vehicles in California increased from 6,964 units in 2011 to 20,093 in 2012, and reached 42,545 units in 2013. In 2014, California's plug-in car market share reached 3.2% of total new car sales in the state, up from 2.5% in 2013, while the national plug-in market share in 2014 was 0.71%. The state's plug-in market share fell to 3.1% in 2015, with the plug-in hybrid segment dropping from 1.6% in 2014 to 1.4%, while the all-electric segment increased to 1.7% from 1.6% in 2014. Still, California's market share was 4.7 times higher than the U.S.