The military made a moderately sized warship that was designed to be invisible to radar. It looked like an elongated pyramid and had a similar appearance to stealth fighters. I remember seeing a discover channel documentary on it.
After only testing it at night, after it was completed they took it out of the bunker and drove it around the city's shore. However, this ship was not at all invisible to sight, and I believe it was in California. They took it out and drove it around without letting the public have warning, so it must have been a strange sight, perhaps this story has been twisted by fanciful minds.
