Or a single error in 638 miles. Elsewhere in the article "disengagement" is defined as "a human driver has to take over", seemingly excluding natural stops. >

Or a single error in 638 miles. Elsewhere in the article "disengagement" is defined as "a human driver has to take over", seemingly excluding natural stops. > But what's even more significant is how much farther Waymo cars can go before a human driver has to take over. For Waymo, one of these so-called disengagements happened, on average, every 5,127 miles.