I'm not involved in autonomous vehicles at all but as an engineer, I'm pretty confident we are a long way away from level 4/5.

Without significantly reworking current infrastructure the challenges presented by city driving are too fuzzy to guarantee safety. For example, traffic lights can be obscured, out of order, or spoofed; unless they are modified to support av; I don't think this is solvable.

Although autonomous vehicles will require a safety driver for a while, interim benefits still exist and services like this will potentially provide the momentum needed to make those infrastructure changes.