in-car infotainment? Fiat, Nissan, Kia, etc all use Windows [1]
in-flight infotainment? Let's start with Alaska [2]
digital billboards? Given the number of snarky pics on the internet of billboards rebooting, etc, are you really gonna even try to go there?
Windows has a lot of play in the embedded world too. Yeah, certain areas not as much as others, but it definitely is out there.
[1] http://www.microsoft.com/windowsembedded/en-us/windows-embed...
[2] http://blogs.windows.com/business/2015/03/26/unveiling-a-new...