Lotus E20 Formula 1 Race Car Papercraft

The Lotus E20 was designed and produced by the Lotus F1 Team for the 2012 Formula 1 season. The car is installed with a Renault engine and sports a double-DRS rear wing. This E20 paper model is available as a download here. There isn't any information in the template regarding the scale of the model.  If anyone happens to know the scale, please leave a comment and let me know.