https://techcrunch.com/2017/10/18/apples-project-titan-self-driving-test-car-has-a-lot-going-on-up-top/

When one self-driving technology entrepreneur highlights the efforts of another company working on autonomous vehicles, you pay attention: That’s what happened with Voyage co-founder MacCallister Higgins, who tweeted a short video of the top of Apple’s ‘Project Titan’ test Lexus SUV, outfitted with a suite of sensors and autonomous hardware.

This isn’t the first time we’ve seen the car and its roof array, but it’s probably the best up-close look at it we’ve had, and it’s also being seen through expert eyes instead of through those of nearby residents who happen upon one in the wild. Higgins says, for instance, that the large rooftop assembly probably actually contains “the majority of the compute stack,” as opposed to having that stuffed in the trunk like it is in many other vehicles.