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Will cars ever run on carbon dioxide, or is that marketing hype?

CO2 Fuel Catalyst. Want to learn more? Check out these alternative fuel vehicles!

With petroleum-loving masses and tax-happy governments finally getting on board with the development of alternative fuels, the race has been on to find the cleanest, eco-friendliest, and most importantly, cheapest, alternative to fossil fuels. But it hasn’t been easy.

Many have been hyped and ultimately abandoned (hydrogen fuel anyone?), with more filling the pipeline all the time. The new eco darling? Carbon Dioxide.

The by-product of combustion and a notorious greenhouse gas, ecologists have been bemoaning CO2′s constant release into our atmosphere for decades. So why not take all this excess, free-floating gas and turn it into something useful: The perfect alternative fuel. And that’s just what several companies are doing.