With the eVTOL (electric vertical take-off and landing) industry rapidly evolving, London-based startup AltoVolo is entering the arena with a unique proposition. Their new development, Sigma, is positioned as a next-generation personal air vehicle that combines aerodynamic efficiency, hybrid propulsion, and exceptional quietness. Unlike air taxis, which focus on short routes within urban areas, Sigma is capable of long-range flights comparable to private helicopters, but with noise levels reduced by 80%. More