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Some of these come into the category of renewable energy. Renewable energy includes electricity generation for the home, while the term "alternative fuels" tends to refer to mobile energy. Some alternative fuels and the cars they power are : ethanol, oil shale, steam engine cars (like the Stanley Steamer), coal-oven steam cars, electric vehicle, electric cars recharged by solar cells, Tesla's electric car (with antenna), hydrogen fuel cell (see hydrogen carA hydrogen car is an automobile which uses hydrogen (usually obtained from decomposition of methane, and sometimes from water using electrolysis) as its primary source of power for locomotion. The main benefit of using pure hydrogen as a power source is t), hydrogen internal-combustion car (see hydrogen carA hydrogen car is an automobile which uses hydrogen (usually obtained from decomposition of methane, and sometimes from water using electrolysis) as its primary source of power for locomotion. The main benefit of using pure hydrogen as a power source is t), Water Fuel CellThe Water Fuel Cell is an electrolysis device which is claimed to break water into hydrogen and oxygen gas using less energy than the energy present in the bond itself. It doesn't use a large amount of electricity nor does it release a lot of waste heat., hempHemp is Cannabis grown for fibre, food, fuel, or other non-drug uses. Historically, the textile uses have been most important. Cannabis grown as hemp is the same species as that grown for marijuana, although millenia of selective breeding has resulted inseed oil fuel, organicOrganic has several meanings and related topics. Its original meaning is "Part of or derived from living matter". It can be related to, or derived from living organisms: organic matter. It can mean, relating to, or affecting a bodily organ: an organic dis fuel (garbage), gas vaporizing carburetorThe carburetor (carburettor in British English, "carb" for short) is a device which mixes air and fuel for an internal-combustion engine. Carburetors are still found in small engines and in older or specialized automobiles such as those designed for stock, magnet car, and air car. Some less conventional alternative fueled cars are : wind-up car, nuclear powered, rubber band (stored energy), spring power (stored energy), and wind-powered sail cars. Most alternative fuels are designed to be cheap, non-polluting, non-finite sources of fuel or power.