Somehow, just somehow, even if they can truly do this, I will bet one hundred and eleventy billion dollars that it requires much more energy (just from the electrolysis part alone), than you actually get from the petrol. But with the word “climate change” inserted eleventy billion times, they are sure to get lots of free government money to develop it, and will retire in the bahamas just before the government realizes it isn’t worth the investment.
not to mention that removing carbon dioxide from the atmosphere would be harmful to plants and crops ... doh!