With optimized combustion engines, the fuel consumption and CO2 emissions of cars are decreasing constantly. At the same time, the distribution of alternative fuels will have tripled by 2020 â in contrast to petroleum, where availability is limited, biofuels are renewable, eco-friendly and are becoming more and more popular. VIAVISON's edition for July and August gives you an overview of alternative fuels and illustrates their green potential. Also: efficient engines â how can intelligent technology be used for economical yet powerful vehicles? And: green is in fashion â eco-friendly cars dominate the streets of tomorrow.