Solar cells are capable of producing a reasonable amount of
electric energy from solar light. This has stimulated the
imagination of many creative people around the world. One of the
most attractive uses for the photo electricity –electricity
produced by light– are the vehicles powered by solar energy. So
far, tests on airplanes, boats and cars have been performed with
different results. A light airplane, which had all the roof
covered by solar cells capable of producing enough energy to
move an electric engine, was able to fly over the English
Channel. Each year on Australia an original race is celebrated
where only solar powered cars run. The participants have to
travel from side to side the Australian continent and most of
them don’t finish. The average speed accomplished by these cars
is between 50 and 80 Km per hour. The disadvantage of vehicles
directly powered by photovoltaic cells is that they only work
well on places with a exceptionally clear and sunny weather. As
usually happens on the high technol