I get Aviation eBrief from AOPA, and in that email it said the FAA had completed tests on the fuel.....I guess it did not say they had approved it, only that they had tested it. If the fuel weighs a pound more per gallon than 100LL and we can only carry half as much......just think of all the landings one will get. A lot of folks need takeoff and landing practice. That can't be all bad. Scott
