The automotive industry is witnessing a significant evolution in engine design with a focus on greener solutions. In-wheel electric motor technology is emerging as a game-changer, eliminating the need for traditional liquid fuels and offering better efficiency. GAC and BMW are leading this innovation, with GAC's in-wheel engine boasting high-speed operation and compact design, while BMW's engine by DeepDrive promises enhanced performance and fuel economy. Both manufacturers are set to introduce models with these advanced engines by 2025, aiming to revolutionize the electric vehicle segment. GAC plans to mass-produce their in-wheel motor technology and potentially collaborate with other manufacturers for wider adoption. BMW, on the other hand, is gearing up for production of a new fleet of electric vehicles. These developments could pave the way for hydrogen technology, as hydrogen-powered engines are being viewed as the next frontier in alternative fuel solutions. The advancements in in-wheel electric motors may serve as a crucial intermediary step towards hydrogen-powered engines. Tesla's plan to produce a hydrogen-powered car by 2026 further solidifies the industry's shift towards diversified sustainable options. Hydrogen technology offers the advantage of easy adaptation from internal combustion engine designs, making it a feasible alternative for automakers looking to embrace sustainable practices.