CalCars (also known as The California Cars Initiative) was a charitable, non-profit organization founded in 2002 to promote plug-in hybrid electric vehicles (PHEVs) as a key to addressing oil dependence and global warming both nationally and internationally. It was active until 2010, when the first mass-produced PHEVs arrived. CalCars envisioned millions of plug-in hybrid electric vehicles, charged by off-peak electricity from renewable energy sources, and with their internal combustion engines powered by low-carbon alternative fuels, as a way to significantly reduce greenhouse gases that come from transportation.