It's no secret that Uber's young self-driving car program still needs work, but how does it stack up next to efforts from others? Not so well, it seems. California's Department of Motor Vehicles has published stats showing that Alphabet's Waymo is well ahead of the pack. While Uber's data (not part of the DMV report) shows that its autonomous system disengages about once every mile, Waymo's only requires human intervention once every 5,128 miles. Nissan's system, meanwhile, disengages once every 146 miles.