The ACT Expo 2021 marked a departure from previous years by presenting a more balanced approach to alternative powertrains, shifting from a sole focus on zero-emission vehicles. The event, known for its networking opportunities and informative discussions, featured a variety of topics surrounding the current state of the industry. While ZEVs continued to receive attention and investment, there was a notable emphasis on diverse fuel options including CNG, RNG, hydrogen, and biodiesel. Key announcements included Toyota's unveiling of a third-generation fuel cell vehicle with improved efficiency and power, along with new products from Peterbilt, Kenworth, and other major OEMs. The presence of new players like Windrose and Tesla added to the expo's dynamism, showcasing unique offerings in the industry. The event also shed light on the significance of alternate fuels such as CNG, RNG, and hydrogen, emphasizing their role in reducing emissions and enhancing efficiency. Discussions around decarbonization solutions and advancements in technology, like the Cummins X15N engine and the innovative biodiesel solution by Optimus, highlighted the industry's commitment to sustainability. Moreover, the expo explored the potential of hybrids as a viable solution, with major players discussing the fuel savings and environmental benefits they offer compared to traditional vehicles. With a focus on practical, low-cost, and environmentally friendly solutions, the industry aims to navigate the complexities of the 'Messy Middle' by prioritizing continuous improvement and innovation.