Pretty neat rear view display for motorcycle helmets:
I was intrigued that Robert Heinlein also thought that something like this would be a cool idea for space suit helmets - or at least a Space Suit Helmet Rearview Mirror in his 1958 novel Have Space Suit - Will Travel:
...I would take a rearview mirror. You can’t glance behind you; you have to turn your entire body.
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Tiny Flying Robot Weighs Just One Gram
'Aerostat meant anything that hung in the air. This was an easy trick to pull off nowadays.' - Neal Stephenson, 1995.
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Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'