I'm an avid cyclist. I think I'd prefer a deterministic, law abiding driver to the average human.

What makes me feel unsafe are the drivers who break the law (you don't know who you are) and the drivers who hate cyclists and pass us as closely as possible, throw bottles at us, etc (you do know who you are).

What makes me feel unsafe is the unpredictability. I would expect a computer would just follow the rules exactly and be very easy to bike around.