Liquefied petroleum gas (LPG), also known as propane, is made up of propane, propylene, butane, and butylene in various mixtures. It is called propane
in the United States because it is always mostly propane. It is produced through natural gas processing and crude oil refining.
Propane powered vehicles are already popular in the United States with over 300,000 vehicles around the country. Estimates show that California has up
to 40,000 registered propane vehicles. Propane vehicles have been around for more than 60 years. Propane engines last 2 to 3 times longer than that of
gasoline engines and have less carbon build-up.
Links for more information:California Energy Commission
National Propane Gas Association
Propane Gas Association Group
Propane Gas Facts
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