I suspect you weren't too far behind Arthur. As for you MG, you got the ball rolling. You saw the genesis of the Z underneath all the frippery.
Here's some info on the car:
This prototype was powered by the Yamaha 2.0L 4 cylinder engine.
It would appear to be the continued refinement by Yamaha of the Joint Nissan 2000GT/Yamaha A550X Development Project. Shown here in Black as of Dec. 1964, it was built as a fiberglass prototype and first painted white. Other pictures of this prototype have been circulated, but no documentation as to the date it was finished has been found so far.
According to Mr. Yoshikawa, Yamaha used this prototype to demonstrate their Design and Rapid Prototype Build capabilities to perspective clients of their Yamaha Design Center.
Here we can see several of the Goertz styling clues (Corvette front end, radius'ed wheel arches, tall greenhouse etc.) carried forward; yet the rear quarter windows receive far different treatment, the overly long nose of the Nissan 2000GT is shortened and the front fenders are far more rounded etc.
Unlike the first clay and metal prototype of the Nissan 2000GT, this prototype of the Yamaha A550X was kept by Yamaha, and all the pictures of it were taken at the Yamaha facility.
This was taken from here:<<< link removed >>>
Next up: something a little more difficult.