Apparently Sven Svenning started to build this car in 1956 but never finished it.
It got stuck into a barn and was only rescued a couple of years ago and sold to a Christian Grundmann at auction.
It's he who completed the car very recently. Originally the car was, I believe, called by Sven the PlexiTopSpecial as the opening top was made of plexi-glass, on top of the hand-formed aluminium body.
Here are pictures of the car as found a few years ago: