I assumed we were talking about the path to FSD, not just highway cruising. The disconnect rates are based on city traffic, not open highway stretches. Where you actually have to react to traffic, lights, stop signs, pedestrians, bicyclists, and who should go first at a 4 way stop. Tesla is at 3 miles in these environments and others are at 5,000+. I'm guessing the companies that can manage a complex 90 degree turn at a San Francisco intersection in traffic laugh at keeping a car between the lines on a highway as any kind of challenge at all.