y combine with oxygen and the electrons (e-) to produce water. Individual cells produce a small voltage. They are arranged in stacks to provide the required level of power. As all fuel cells also this one should provide a range of critical benefits that no other single power technology can match. According to United States Alternative Fuels Data Center vehicle powered by a fuel cell can be highly efficient and can reduce emissions significantly (2000,WWW). This technology is relatively young and still dealing with many issues; most of the problems are similar to "conventional" hydrogen powered engines. Almost all of the problems are associated with the hydrogen attributes that complicate its use, such as complicated handling, fueling and storage. Yet, there is no working fuel cell engine that is possible to mount into a conventional car; there is a working prototype of a fuel cell engine working with liquefied propane gas that is operated by University of Berlin. Propane Gas essential attributes are very similar to hydrogen attributes, so there is a hope that soon there will be also a hydrogen-powered fuel cell developed. Whereas world petroleum reserves could not last forever it is very important to research other possible non-petroleum based fuels that are better for the nature and at least as good as gasoline to us. U.S. senator Harry Reid office (2000, WWW) Germany, Japan, Belgium, United States and Saudi Arabia are further researching and expanding the possibilities of hydrogen as a fuel that can replace gasoline one time. Relying on the Middle East petroleum resources weakens national strength of all the countries that do not have any important petroleum resources and every country could be self-sufficient with hydrogen. For example U. S. trade balance sheets show that oil imports drain 1 billion dollars from the U. S. economy every week. Important is also the "clean transport effect", thanks to an engine that does not produces an...
