It took me a couple of pages of this thread to get what they were really trying to test, but once it became clear what they were doing it seemed a little dumb. As Ken said, it is just like testing to see if it could take off in a 30 kt tailwind. Of course it can, as long as the runway is long enough to get to the required airspeed.
The one thing I will add, is in the real world the other limiting thing (besides bearing friction or gear strength) is more realistically going to be wheel speed. Depending on the aircraft the tires are certified for a particular speed---for the 737 NG series it is max 225 kts, most transport category jet aircraft are between 225 and 235 kts. Basically fast enough for a flaps up landing, but not fast enough to take off on a gigantic treadmill going the wrong direction at more then 100 kts without coming apart.
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