It would be my hope that the autonomous vehicle would place environmental safety higher in its "hierarchy of needs" than determining whether or not they arrive "on time". I could be wrong on that, especially for delivery vehicles... which is where I'd hope good legislation and regulation comes into force.
If not, then it'll take a few fatal accidents to get people fired up about it.
However, I'd expect autonomous vehicles to be a saviour for road safety. Algorithms don't rust; programming doesn't fall asleep, and (with the above caveat) aren't going to pass a cyclist while approaching a blind turn or crest of a hill because they're impatient.
That'll make cycling safer, and that's gotta be a huge incentive to cycle.