That's kind of like being critical of an article covering the best pickup trucks by saying, "well, a Radio Flyer wagon also has a bed, four wheels and a steering system. How come it's not a contender?"
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The wagon is missing an engine, transmission and suspension. The other players in autonomous driving are missing the most important ingredient of a neural net learning system, namely, vast amounts of training data. Artificial intelligence doesn't rely on logic to work it's magic, it needs vast quantities of data covering every conceivable situation (and many situations that are not conceivable). Only Tesla has that key ingredient.