I think you're overthinking it. Yes, those are issues, but they're hardly blockers. Few rides will fuck up the interior, and fewer still will have a dispute abo

I think you're overthinking it. Yes, those are issues, but they're hardly blockers. Few rides will fuck up the interior, and fewer still will have a dispute about who's responsible for a mess. Compared to having one 'employee' per car at all times, there's still plenty of economies of scale to exploit for profit.