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![Incredible self-driving LEGO train system shuffles balls around endlessly [Video] - The Brothers Brick | The Brothers Brick](https://s3-us-west-2.amazonaws.com/media.brothers-brick.com/wp-content/uploads/2018/10/Overview-of-GBC-Train-System.png "Incredible self-driving LEGO train system shuffles balls around endlessly [Video] - The Brothers Brick | The Brothers Brick")
Incredible self-driving LEGO train system shuffles balls around endlessly [Video] - The Brothers Brick | The Brothers Brick
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