In a macro perspective drilling for oil, shipping it across the world on boats, pupming it into refineries and ground transporting it out to aircraft who then turn only 20% of it into actual working power, is just about as inefficient as you can get. The infrastructure for electrics is already there and readily available. What's even better, it's already been paid for.

There's been a lot of talk of electric taking over for the last 100 years and not much has come of it. But i truly believe we've now turned a corner. 1 million sold Priuses and hybrids in every manufacturers pipeline is a sign of that. Just look at the R/C field where electric power has totally trashed all records in both speed and performance. Gas powered doesn't stand a a chance and can't even compete in the same category. Granted, endurance is not what's needed in R/C flying at the moment, but that will come with better capacity.

If it can happen there, it will happen in GA.