Propane Vehicles for Sale, LPG New and Used
According to the U.S. Dept of Energy (DOE), no propane vehicles (passenger cars or trucks) have been produced in the U.S. since some 2004 models (example: Ford F150 was previously sold and is still used by many fleets) . There are many DIY conversion kits that will convert your vehicle to a duel fuel (gasoline and LPG) vehicle and there are many converted vehicles for sale.
Disadvantages of Propane Vehicles
Vehicles have lower range per tank than typical gasoline vehicles, self-serve stations are not as easy to find and no vehicles are currently being produced that run on LPG. Another disadvantage of propane is that it is heavier than air, so it can pool in low spots if leaked and cause a fire hazard.
Advantages of Propane Vehicles
Propane is one of the most common fuel sources in the U.S., but there are not yet many "self-service" pumps for propane. Propane can be found at many gas stations, almost any campground, at many hardware stores, and even at grocery stores and at Walmart. The main advantage is that LPG reduces the need for foreign fuel imports since about 85% of LPG used in the U.S. is produced domestically. LPG is also less expensive than gasoline. Similar to Natural Gas, LPG has lower CO2 emissions than gasoline and lower NOx (Nitrogen oxides - SMOG producing) emissions. Another advantage of propane, is that it is non-toxic.
Propane Natural Gas Injection Systems in Mustangs, Trucks
There are currently almost 2,600 LPG stations listed at the DOE website in the U.S. Since the site does not list at least 7 locations that sell propane in my small town, I assume these stations that are listed are self-serve (or pay-at-the-pump) propane pumps at gas stations. Texas (519), California (228) and Alabama (128) have the most LPG stations. There are 18 states with at least 50 stations and only 8 states (and Wash DC) with less than 10 stations, and all states (including Hawaii) have at least 3 stations. Wash. DC is listed as not having any LPG stations.
Propane Vehicles Info - US Dept of Energy