Grist: Word association time! I say 100-ton boat, you say probably anything but needs no fuel whatsoever. Well, this time youd be wrong, because the catamaran Tranor PlanetSolar (which I propose we rename Trusty the Good Ship Sunshine, because a name that means "the power of the sun" in Elvish is too geeky even for me) runs entirely on sunlight. The solar-powered boat made a 37,000-mile trip around the world on golden rays alone, thanks to its 30,000 thirsty photovoltaic cells.
Mind you, Good Ship...