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So far, it is only on a test track. It may need steering enhancements for long trains to keep them in the lane, and many other enhancements, but it is progress. While it is easiest to deploy in the left lane, most places, it will probably acquire a way for drivers to create gaps for merging or crossing lanes. Even that might be automated by surrounding sensors, breaking trains into short sections as necessary.
The great potential here is to add smart speed controls, without which heavy traffic can't maintain a steady speed. Merging traffic can be neatly added by accelerating beside a "moving" LED display generated to synchronize with the train.
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