The Chevrolet Volt is a plug-in hybrid electric vehicle manufactured by General Motors, also sold as the Holden Volt in Australia and New Zealand. Sales of the 2011 Chevrolet Volt commenced in the U.S. in mid-December 2010 followed by various European countries and other international markets in 2011. Some model years of the Chevrolet Volt have keyless entry remote fob smart keys that are onboard programmable, which means a person can program the keyless entry remote fob smart key with no special equipment other than the keyless entry remote fob smart key programming instructions. While other model years are not on-board programmable and require special equipment in order to program the keyless entry remote fob smart key .