The passenger cell was visible at the Geneva Motor Show
An earlier evolution of the passenger cell is currently displayed at the Museo Ferrari. It's a 1:1 scale model that was finished in March 2012. The model was used to test the interior and its habitability. Front carriage and rear are not included in the study, but the wheels are. The visible parts are painted in Rosso Corsa with a Nero Opaco roof.

Michael's picture of the study is visible in the "Picture Box".