Home eVTOL Swiss company prepares to test its hybrid-electric VTOL/STOL prototype eVTOLNewsUAM Swiss company prepares to test its hybrid-electric VTOL/STOL prototype SOURCEINCEPTIVEMIND.COM 4 Jan 2021 28 Swiss company prepares to test its hybrid-electric VTOL/STOL prototype Manta Aircraft is working on a flexible hybrid-electric aircraft design that will be capable of efficient vertical or short take-off and landing (VTOL/STOL) operations.