As humanity leaves the dark ages, there will come a time when human-driven vehicles are banned from the road for safety reasons, at least somewhere. This creates a huge amount of stranded technology, viable existing cars that will suddenly be devalued. Some of these are of little interest, and some can be retrofitted with aftermarket kits. For ‘classic cars’, it is important that the vehicle itself remain unchanged, retrofits will devalue the car compared to its more authentic state.
This provides a use case for robots, actual I Robot-like robots, that look vaguely anthropomorphic and have two legs and two arms. They can sit in the drivers seat, control the accelerator and the brake with their metallic robotic foot, and with AV software implemented through a robot frame, be safer than human.
An actual robotic chaffeur, the way people have joked about in bad science fiction for decades, does have a use case.