The AGL Corvair powered articulated 4 wheel drive, interchangeable cargo box vehicle... astonishing (thanks to John Simpkins!)

This is pretty damn cool, and further reminds me that I have not yet seen all the cool stuff from history in this hobby

Thanks to John!

another concept prototype military r&d tank... the Air Plenum Drive amphib (even floated on water)

Found on http://strangernn.livejournal.com/823333.html