Rolf, this is the low cost version (homebuilt).
This is how I got my Pilot license. I built this for the Redbull Flugtag contest in 2007.
And BTW - flying your homebuilt "aircraft" is really really cool. <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" /> <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />