[WiseWeasel]

Exactly right. The premise that this technology would be integrated into cars is ridiculous, and my guess is it was added by the "journalist". This technology would most likely be used in places where feeds of concentrated CO2 are already available, such as coal power plants, water treatment, waste management, compositing, etc., and the fuel would be sent off to be distributed through fuel stations just as it is now.

The only impact this might possibly have on automobile design would be to try to recuperate the carbon from the exhaust using some of the power generated from the combustion to convert the exhaust CO2 into formic acid, to be exchanged for fuel in the next refueling. My guess is it's not going to pay to do that though.

[gus_massa]

It is difficult to get hard numbers, but probably the limiting resource is the energy in form of electricity, not the availability of carbon dioxide. So, if this is a good idea, the producing plant should be near a cheap electricity plant.