Strange Ferrari FXX caught in action

This strange Ferrari FXX was caught leaving the Maranello factory using the rear gate from which usually leave the prototypes for testings. So, what does that means?

It may be a mule that hides some "exciting" new invention for a future road model (the car is also equipped with side mirrors, so it is unlikely to test some solution for the track). Might this be the first step to the future F70, Enzo’s successor? We will need to wait and see!