In order to evolve your Circuit Tank 1.0 you need Doc Zap’s Even More Secret Identity Badge. Just like the first Secret Identity Badge, you need to answer a series of questions which will lead you to the badge.
First, you will need to head to this link, http://hanoverhigh.com/october09, to start the quiz.
Once the quiz is completed, you will enter your login info and the badge will be added to your Nanovor acount.(This no longer works.)