A paint developed by a German inventor could make a vehicle invisible from radar and significantly hides it from all military relevant frequencies.  The paint is called the AR 1.  How it actually works is still unclear but a test researcher proposes it’s either by reflecting radar waves in a pattern so they cancel one another out or by utilizing microscopic magnets to absorb radar radiation.

The inventor of the paint, Werner Nickel has a fascinating story.  He said it involved thousands of hours of lab trial and error, as well as international military interest in his product.  Apparently, the most promising use for the camouflage paint could be civilian, since airport towers and buildings interfere with flight control radars.  Hence, eliminating the interference would be quite useful.