"....Taxing without engines running could also yield substantial savings that Airbus estimates at 10,000 metric tons of fuel during the life of an A320...."
Can we have this translated into the total fuel consumption of an A320
during its life time? 0.1%, 0.01% ?
OK, I'll be honest.
I see this as somebody trying to make another quick buck from the aviation bashing lobby.
Selling better smoke stack cleaning equipment to the Chinese coal firing power stations (one going on-line every week) would seem a better idea than selling an unproven gadget to reduce arcraft "emissions" (currently at about 2%) by 0.01%.