A thing in technology i would liike to see more fully developed is cars or planes. any way of transportation i feel can be way more highly developed in a lot of ways Increasing fuel efficiency, electrifying trains, and leveraging automation are only a handful of ways that freight rail can become more sustainable. Battery-electric and hydrogen-powered trains are also long-term, zero-emission locomotive solutions, with the former hitting tracks across the country. However aircraft productivity and efficiency are measured, they can be improved through advances in aircraft aerodynamics, materials, structures, and other disciplines that improve performance parameters such as lift-to-drag ratio (L/D), ratio of empty weight to MTOW, and specific fuel consumption.