Home eVTOL Swiss company prepares to test its hybrid-electric VTOL/STOL prototype Swiss company prepares to test its hybrid-electric VTOL/STOL prototype 4 Jan 2021 | eVTOLNewsUAM/AAM Swiss company prepares to test its hybrid-electric VTOL/STOL prototype These aircraft can take-off and land vertically when needed, but also operate from very short airstrips.