Most of the LPG used in the United States is produced domestically. Propane has been used as a transportation fuel around the world for more than 60 years. Missouri has approximately 320 propane fueling sites. See chart below for Model Year 2000 alternative fuel vehicles. Solar power, may however, be used to run certain auxiliary systems in the vehicle.
Solar energy is derived from the sun.
In order to collect this energy and use it to fuel a vehicle, photovoltaic cells are used. The Insight and Prius are considered advanced technology vehicles, not AFVs.