Soon they won't even be needing the gas motor.You have probably heard of the emergency parachute systems that will safely deliver your small aircraft back to earth. One company now plans to install "emergency electric engines" in small aircraft that can provide additional power or emergency power if the gas engine quits. I didn't see that coming. More info at the link.
http://www.gizmag.com/emergency-electric-engine-uc3m-aircraft/37958/
K007This looks pretty awesome but man, too high dollar for me https://nyxbikes.com/ that em3ev frame is the cheapest but still oouch. Guess I'm just going to have to get a cheap crap wall mart bike if I want full suspension. bummer