I'm waiting on these manufacturers to run tests here in the northeast. Rain, sleet, ice, piles of snow. And not mention pothole season after winter, where some roads here have more craters than the moon.
Show me these self driving cars navigating all that, then I will be throughly impressed.
OK, One of the DARPA Challenges was to have to cars driving on dirt roads or more like "trails" out in the dessert. This pretty much is like your "craters of the Moon" as these "roads" were only suitable for 4x4 off road vehicles. Then more recently Google said they have driven over one and a half MILLION miles on real streets.
But road conditions is one thing these cars don't handle well. But still it is only 2015, give then time.