This is an interesting (but long) read on the Atlantic about Google’s facility for self driving cars. To supplement simulations they build physical replicas of real infrastructure to test the cards. This caught my eye:

We pull up to a large, two-lane roundabout. In the center, there is a circle of white fencing. “This roundabout was specifically installed after we experienced a multilane roundabout in Austin, Texas,” Villegas says. “We initially had a single-lane roundabout and were like, ‘Oh, we’ve got it. We’ve got it covered.’ And then we encountered a multi-lane and were like, ‘Horse of a different color! Thanks, Texas.’ So, we installed this bad boy.”

 If Google’s tech is only at the level of handling US infrastructure then we are a very long way from widespread adoption. Anyone who has driven in the US knows how benign their roads are. If they think a 2 lane roundabout is a challenge, wait until they get to Europe! I will know the technology works when it can drive into and out of someplace like Rome at rush hour!

Still, read for your self what goes on here: 

Waymo Built a Secret World for Self-Driving Cars

An exclusive look at how Alphabet understands its most ambitious artificial intelligence project