Why the fuck would anyone sign up for the “safety driver” job?

It would be boring- you wouldn’t have much control but also couldn’t multitask or do anything else during your shift. Presumably it wouldn’t pay all that much because the entire business model of this company is to create a market efficiency on the labor side. Finally there is the outstanding question of how much liability you assume as the “safety driver”. If the self-driving features start bugging out, but you don’t stop it in time, are you on the hook for damage it causes? I would want a ton of legal liability assurances before I took that job.