The second review of the IMF took place on December 14, 2021 together with the Paris Hybrid focus project. The latest achievements of the e-Sling project were presented to the public shortly before Christmas. Due to the current Corona situation, the review had to be kept online. Nevertheless, the two modules 'Aircraft' and 'Hydrogen' were able to have lively discussions with the audience after their presentations and answer their questions. Freshly motivated, the work now enters the next phase.