The article discusses how advances in eco-friendly technologies have improved the environmental impact of road freight. Over the past 40 years, fuel efficiency in trucks has gotten better, cutting down on engine emissions. This shift was primarily due to cost concerns, but now, it's also great for the environment. Techniques like better driving habits, bigger trucks, and smarter usage help boost fuel economy. Special engines that use alternative fuels, like electric and hybrid ones, are becoming more common. Some cities even use hydrogen fuel cells for buses. Other options, like biofuels and biogas, are being explored, even though there's debate over their sustainability. There are also solutions for power loss in truck engines using gases like liquefied petroleum gas and compressed natural gas.