As an update to Side roads on the way from 1968 to 2001: 5a, I just got a used second edition of the book “2001: Filming the Future.” It has a few more photos than the more readily available 1st edition. One of those photos shows the cars used in that in-flight movie… the GM Runabout and the Firebird IV. Since *both* of those cars – or more likely, mockups – were on-set, it’s fair to suggest that the GM-X was as well. And the second, blurry vehicle, briefly seen in a few frames? On further review, what I thought might be the “Deora” truck looks like it might’ve been the GM-X. The left, which I thought was the front of the Deora, might be the rear of the GM-X. The GM-X had something of a concave rear surface, and a forward fender that was bowed upwards and formed a long low “bump.”
If someone reading along happens to have a Blu-Ray of 2001 and the ability to make good screenshots, that might be handy. Hint, hint.
UPDATE to the update: read the comments. There is a good case to be made that the Blurmobile is actually the Mako Shark concept car.
Well, with a single Blu-Ray screenshot, the answer is pretty clear. Three cars on visible on screen at once: the Mako Shark, the Runabout and the Firebird IV: