An volunteer group called Ambular is designing a dedicated eVTOL air ambulance aircraft and has the support of the International Civil Aviation Organization.
The aircraft developer says that by 2026 hydrogen fuel cells will be more viable for aircraft propulsion than batteries or internal combustion engines.
Jump Aero says it is developing a single-seat eVTOL to be self-piloted by paramedics, but it has so far declined to release any projected performance details.
NASA administrator Jim Bridenstine pledged increased support to U.S. efforts to develop aircraft with more sustainable propulsion systems and autonomous flight capability.
The city government of Yunfu in Guangdong province is investing $6 million in EHang's factory, which will open with annual capacity to build 600 aircraft.