[Luff]

I'd bet that the next big technological revolution will occur when the next generation of batteries hit the market: http://www.extremetech.com/computing/129299-silicon-nanotube...

Electric quadrocopters today have pretty limited range, with a flight time of about 30 minutes. You could do some pretty neat stuff if they lasted 5 hours.

Not to mention what it will mean to regular airplanes, cars and mobile technology. We'd might even start to see some futuristic weaponry, not that it would be particularly positive.