Inside Google's Driverless Car: The Unused Kill Button

A Google driverless car navigating along a street in Mountain View, California on April 22. Photographer: Google via AP Photo
Lock
This article is for subscribers only.

One of the first things I noticed during my ride today in one of Google's driverless cars was the big red kill button between the two front seats.

During my 20-minute demo, we never needed the button. In fact, the ride was so smooth that I soon forgot it was there.