I don't expect anything from the USA without a concerted effort among its citizens. I don't trust the politicians nor the big oil conglomerates that is for sure. We should be moving on a progressive front in all directions whether it would be conserving/saving our natural and energy resources such as alternative fuels/oil or working on new technologies to lessen our dependence on certain resources that cause more harm than good.
From the aspect of aviation I just we believe we have a much longer road to travel and many more hurdles and technologies to figure out. Right now as with many such as Brazil and other nations the largest progress and visible success has been made from our evolving use of automobile technology and all its associated components.