OT: We have had the Police of Brandenburg federal state evaluating two rented double seater microlight-autogyros in Germany in 2009. However they were not accepted for duty by the police after the tests and a change of the interior minister there. Never found out what licence would have been required for official use of a microlight.
picture:
http://images.aerokurier.de/sixcms/m...pg.2260791.jpg