Targeted for ages ten and up, this edition enables a younger audience to experience one of the most significant technologies of the early 21st Century — especially appropriate in the midst of our auto industry crisis and global energy situation. By constructing and operating a unique reversible hydrogen fuel cell, powered by water and sunlight, children build a model car that actually runs on water! And in so doing, they join auto manufacturers in experimenting with a technology that will power not only automobiles, but electronic devices such as laptops and cell phones. This new edition has a beautifully redesigned car body with a display stand and a rewritten 64-page, full-color experiment manual, and retails for $169.95. Available fall 2009.