Runs on hydrogen, the most abundant fuel in the universe!!!  I love that kinda talk.  If only it were that simple...
Not a bad price for a little techno-toy, though.  And a lifetime guarantee to boot!  I'm sure they'll replace it in 25 years no problemo.
"most abundant fuel"

When anyone tells you this, say "It's an Element. It isn't Fuel until it's in your tank and you can keep it there."

It's a fuel when it's in the chemical form H2. There are a lot of H atoms kicking around the neighborhood, but precious few H2 molecules!
It is sold as an educational toy but
The fueling station is powered by a solar panel or two AA batteries.
It would have a more powerful educational message if it ran only on the solar panel.
What about people who take night classes?!?!

I believe it would be a powerful educational toy if it ran on solar power or a potato.