Weird Bike Wednesday - The Pterosail

The Pterosail is a recumbent trike with a sail

Here's a pretty weird bike: The Pterosail. I saw this at Interbike a number of years ago. I always thought it was not very practical (Great downwind, lousy upwind), but apparently some were commercially available. It appears they are now shut down. Their website is gone, and their latest Facebook post was in 2011. Here's a video (Note how they only show it going downwind).