The Elantra LPI Hybrid , launched in the South Korean domestic market in July 2009 , is a hybrid vehicle powered by an internal combustion engine built to run on liquefied petroleum gas ( LPG ) as a fuel .
Alternative fuel cars releases in 2013 include the Honda Accord Plug-in Hybrid , the Mitsubishi Outlander P-HEV , the Ford Fusion Energi and the McLaren P1 .