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Scientists have developed a new technology that could cut carbon dioxide emissions from trucks and buses by almost 90 per cent by capturing CO2 within the exhaust system, converting it into a liquid and storing it on the vehicle. The liquid CO2 would then be delivered to a service station where it will be turned back into fuel using renewable energy, according to the researchers from the Swiss Federal Institute of Technology Lausanne (EPFL). They propose to capture CO2 and convert it from a gas to a liquid in a process that recovers most of energy available onboard, such as heat from the engine.