[bravetraveler]

That sounds like a complicated way to say there are more ways to screw up than do it perfectly, which, duh.

Not to discount this at all, but... yea

Even if the brains of it become perfect, I doubt the vision-only approach (or has that changed?)

They need at least somewhat decently consistent 'signal' to act appropriately... and there are some mornings I just don't drive because visibility is so poor