Unless you are an uber geek you have probably never heard of the NextBit Robin. This is a phone that heavily integrates cloud storage into Android. If you are familiar with adoptable storage (using sdcard as internal storage) you will probably understand what NextBit is trying to accomplish with the Robin.
The Robin utilizes cloud storage as internal storage so you never run out of space. The phone is advertised as having an unlockable bootloader and has been targeted at the ultra nerdy rooters and hackers! The good news is that TWRP 3.0.0 has just been released for the device which means that real development can now begin.
via XDA