I assume this is what we're talking about:

It looks like a good idea and it's relatively inexpensive - essentially a computer on a card with the form factor of a PCMCIA card (for people who remember those).  They're currently claiming a ship date of, well, yesterday (literally).  So we'll know in a few days if they shipped or not.  I guess the problem is that it's been a very long time since they took people's money?  The version of Fedora they're claiming to ship on some of the cards is Fedora 24, which Wikipedia said was released 2016-06-21, and end-of-lifed 2017-08-08.  So anyone who ordered has been waiting perhaps 2.5 years?  But if this starts ending up in people's hands, I'll consider ordering one ...  Although that would be a bit silly: for my purposes a Raspberry Pi is still more practical.

One place where this would be incredibly useful to me: I think it's a bad idea to cross any international border with important data on your computer.  (Let's face it: the only law at the border is what the border guard says it is, and seizing data is becoming more and more common.)  So being able to pop out the computer card from your laptop shell and slap in a clean one (for a mere $55) sounds like  great answer to that problem.  Just keep your border-crossing card up-to-date for software, and don't install anything personal or corporate on it.