Lets not quite loose our heads (see what I did there) over the eHang184.
Its a fun diversion lacking in performance.
A quick glance at Trade a Plane shows me I can purchase an R22 with 685 hours of life remaining for $85k this would allow me to take a friend at least 380km at 170 kph. I fly helicopters which helps ;-)
I do however admire eHang for bringing this concept to CES it will get people talking and thats a good thing. It also shows an innovating mindset at eHang. Something other multirotor makers lack.