By the year 2010 every car manufacturer in the world plus as many new upstarts will have an all electric car for sale. The demand for power to charge these new cars will be impossible to meet, grid power costs are going skyrocket next when people start plugging them into the grid. Everyone who can needs to install solar or wind power on their homes to offset this demand. I just installed this grid tied roof mounted P.V. system in the spring, it is supplying me with 100% of my power needs, producing around 650 K.W. monthly, buying this power from the Hawaii diesel generated utility would cost 300 dollars a month.