At the Farnborough air show, French aircraft developer VoltAero presented ambitious plans for the development of hybrid-electric and hydrogen-electric regional aircraft. Strengthening its partnerships, VoltAero collaborated with Kawasaki Motors, which has invested in the company, particularly focusing on developing piston engines for regional air mobility. Kawasaki's initiative includes a gas-fueled engine set for certification in 2030 and a hydrogen-fueled variant planned for 2035. VoltAero aims to challenge traditional gas turbine engines with Kawasaki's hydrogen-fueled engines, emphasizing cost-effectiveness and efficiency in general aviation. The company is set to fly a hybrid-hydrogen demonstrator aircraft in the coming year to showcase the possibilities of electric-hydrogen aircraft. In parallel, VoltAero is pursuing certification for its Cassio 330 powertrain, which integrates an electric motor with a thermal engine, targeting production starting in late 2026. Plans for follow-on variants with six and twelve seats are also in progress, with the larger aircraft intended to replace existing business jets. The company's partnership with Sigma Air Mobility highlights the potential for the Cassio 330 in various applications, including air taxi and air ambulance services. VoltAero's focus on efficiency, reduced emissions, and market expansion was evident in agreements with companies like Sigma and Global Sky, signaling a promising future for the hydrogen-electric aircraft industry.