I created VTOL building in 2006 or 2007.
Of course amphibious building was my concept.
It is nice for the earthquake with the censor.
If there is earthquake report by censor,it could take off.
If it is serious,it could move to other place.
What about it?
It is my choice for myself.
There is many drone verion for the house,building,train,,,,,etc!
Compact Lilipad city with drone engine was my concept from
long time ago.
amphibious drone house,building,,! 20180313 111119