Gravitrax.trek.pub
How long can we build a GraviTrax marble run? Could this be the longest GraviTrax marble run in the world? Does this marble …
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It's probably more than 1 nanometer.
100m I think
I think 145 meter
Maybe the entire earth
The king of Gravitrax! Maybe 134 meter.
LOL🤯🤯
Really impressive!!👏👏
Maybe 100? Did you film this video with a drone?
100 Meter
50 Meter
How long? AT LEAST 1 Meter.