Automotive X Prize
Good read - http://www.motherjones.com/media/2013/10/interview-jason-fagone-ingenious-book-x-prize
Critique
"For now, one message is clear. The X-Prize sought to inspire and support a new wave of electric vehicles. In time between its inception and its execution, it has gone from a beacon of hope to a stage for the seedy underbelly of electric vehicles to mix with genuine hopefuls while the rest of the world makes electric vehicles far beyond the dreams of any competing." - [1]
Rule Book
137 Page Rule Book