Approximately 11,016 miles behind, if this Bloomberg article is any indication:
Test drivers disengaged the autonomous mode on Apple’s cars once almost every mile, based on data the company disclosed in an annual report to California’s Department of Motor Vehicles. Waymo’s cars went about 11,017miles between disengagements, and Cruise’s went 5,205 miles.
I know, I know, there’s a lot that these figures don’t tell us which prevent understanding the bigger picture. We don’t, for one thing, know how Apple’s cars are performing in other parts of the country where these disclosures aren’t required – such as Arizona.
Wired has a good piece on why these reports don’t tell the whole story:
While Silicon Valley’s hype around robocars may have cooled, progress toward the day when humans are unshackled from the steering wheel continues. https://t.co/LHLZWGp8e0— WIRED (@WIRED) February 14, 2019