A radio-controlled Superman plane is flown by designer Otto Dieffenbach during a test flight in San Diego, California June 27, 2013. Otto and business partner Ed Hanley are a small start-up company that makes people and objects into flying radio-controlled planes for commercial and promotional uses. [Photo/Agencies]

A radio-controlled Superman plane has a new battery placed inside his head as designer Otto Dieffenbach prepares for a test flight in San Diego, California June 27, 2013. [Photo/Agencies]