'66 AMX prototype - never heard of this one

I have a friend who was clearing a collapsed barn and found a 67 Rambler with a 360 and a huge Daytona like wing. It had 7000 miles on it. He ran the vin and found it was a prototype car and was one of two cars designed to be crash cars. He found evidence the other car was crashed, so he believes this is the only one left. Those cars are out there. I'd take an AMX over a Rambler, but both are out of my price range.