Well, another pipe dream! On passenger ships, imagine the tremendous noise these metal sails would create! And, imagine the drag they would create as the ship tries to power into stiff winds? Oh, sails were useful when ships were made of wood and weighted 100 or 150 tons. But now, when they weigh 60,000, 100,000, 200,000 tons? Get real. You might as well try to power them with candles, squirrels in cages, rubber bands, or solar cells!!! Hahahahaha...

Bravo! I thought the same thing. Google could have made it the biggest usurped ad in history by redirecting the answer to a competitor's ad.