I'm on Ishmeal's Yahoo list and haven't seen much activity on the robot car front, unfortunatley.
This is an area I'm thinking of going in for my own car as well. It can be a task, esp. getting things like object recognition, video, sifting out road noise to recognize things like sirens, driver or passengers speaking, people talking around the car, etc.
Technology is there... but for me, the money isn't. (sigh)