I have very mixed feelings about autonomous cars. One side of me is so excited about the prospect and finds it all amazing and futuristic. I love reading about how Tesla and Waymo approach it differently. The other side of me is absolutely not ready to trust my life to a machine - even though I know I do that all the time in other ways in modern life. I think it will be people's emotional evaluation that will matter…
This isn't just a problem for driverless cars, it's become a real problem for people, too.
The rules of the road are there for a reason, people!
When you wave someone into traffic, or have your emergency flashers on while still moving in the rain, or wait too long at a busy 4-way stop, you're not being courteous or defensive or cautious, you're being unpredictable! (And most likely inefficient, as well.)
Worse, (and this is going to be driverless cars' Achilles heel, IMHO) is people pulling into or across traffic (or otherwise failing to yield) based only on the expectation that the vehicle with the right-of-way will brake and do whatever is required to avoid a wreck.
If they do it in front of a driverless car while trying to cross a busy highway, then people making this assumption are going to get killed.