AvWeek has a brief article about the project: Video: EHang Reports Progress With Autonomous Air Taxi – Aviation Week –
The company says it is on its third generations of propeller, electric motor, electronic speed controller and battery for the EHang 184, which has eight sets of motors and props mounted in upper/lower pairs at the ends of four arms.
EHang is also developing its own flight controller system and algorithms for stable and effective control of a large multi-rotor aircraft with high inertial and load. A third version with increased reliability, security and accuracy is under development.
A November posting here included a video from UrbanAero of Israel showing a test flight of the Cormorant UAV, which is large enough to carry one or two passengers and cargo. (The video is show again below.) The BBC has a short article about the project: Passenger rescue drone airborne ‘by 2020’ – BBC News
A passenger drone, which completed its first flight over low terrain in November, could be in use by 2020, the Israeli company behind it has said.
Developed over 15 years for rescue or military use, the $14m (£11m) Cormorant (formerly AirMule) can carry 500kg (1,100lb) at 185km/h (115mph).