Technology is available for developing large artificial trees to remove carbon dioxide directly from air. These artificial trees can be designed to remove a volume of CO2 equal to the total tailpipe CO2 emissions of a given region, resulting in a zero net balance of CO2 in the atmosphere; effectively making the hydrocarbon burning cars and trucks in the region equal to zero-emissions vehicles. The CO2 could be harvested from the artificial trees and recycled back into synthetic gasoline or synthetic diesel fuel. Synthetic gasoline made from recycled CO2 would be renewable because the CO2 tailpipe emissions from hydrocarbon burning engines would be drawn out of the atmosphere by artificial trees and chemically recycled back into synthetic gasoline.
Source: americanenergyindependence.comAdded: 1 March 2007