I rode in Google’s self-driving car. This is what impressed me the most.

[BoFox]

Interesting:

And none of the data it was using had been drawn from Google Maps or Google Street View. Google Maps isn't helpful because the car has to physically drive the preplanned route a couple of times before it's ready to perform the task on its own. And Street View images don't provide enough depth — they offer only a 2-D image whereas the car needs a constant 3-D picture.
Jennifer Haroon, head of business for Google's self-driving cars, explained Sunday that there's another reason the cars don't talk to Google Maps or the rest of the Internet.
"That was a security decision," Haroon said. The less insulated a car's driving systems are, the more exposed it is to potential hackers. And with these cars making life-or-death calls on behalf of human beings, that's a dangerous thing.

Nvidia's Tegra better not crash, either!