Dav8or
Final Approach
Why do you think this is the "magic bullet?" If anyone turns physics on its head and creates energy storage density on par with hydrocarbons, what make you think it won't be as expensive as petro?
It may not be any cheaper, but the airplanes will be so much better in terms of reliability, performance, comfort, simplicity of operation and maintenance. It really will revolutionize the personal GA plane and the product will be so compelling that it will draw people back to GA. If we could couple that with an overhaul of the ATC system to make IFR flying dirt simple, we would really have something. There will likely even be a cottage industry to convert the surviving legacy fleet to electric.
I can't say it will be cheaper, it may not, but it has the potential to be. Like was mentioned here already, you could take advantage of free solar charging while you're gone. At the rate most of us fly, we would return to the hangar each time with a free full tank of gas so to speak. Of course this assumes we're talking about batteries. The solution we seek may actually be fuel cells in which case we would still be buying some sort of fluid, or maybe gas.