It may be last windows you ever need to install, fix, update, upgrade, repair, re-boot or repair anymore and it is faster that your´s too, it´s size is 5 megas and it fixes and upgrades and fixes also all third party windows applications without your actions needed. It means good bye also for end-user windows security vulnerables, viruses and virus scanners too in windows world from end-user.

Someone has been thinking something more seriously, previous apple / microsoft employer...

http://www.nytimes.com/2012/02/23/technology/personaltech/onlive-desktop-plus-puts-windows-7-on-the-ipad-in-blazing-speed-state-of-the-art.html?pagewanted=1&ref=technology