There are unlabeled, very slick looking LIDAR enabled cars driving around the Mountain View area - I've been told by a few folks on HN and IRL that 'everyone knows' they're Apple vehicles.
Unfortunately no, and I should mention a cursory search turns up known driverless startups active in Mountain View - so I think unless any other HNster has better evidence, treat me as hearsay.
I also shouldn't oversell them, the ones I've seen look 'slick' in that they are similar to other well-polished LIDAR test vehicles that aren't just a bunch of sensors bolted to a roof rack, and they're 'mysterious' in that they're unmarked.
Ghost has a weird pattern and their name on the sides of the vehicle. Nuro is uses Prius' mostly. Woven planet/Toyota tends to have slicker looking vehicles. They're the right vehicle in this picture: