I think it’s a great idea to require a human attendant for giant autonomous machinery.
If the company does not provide the attendant, then the public is just going to shoulder that burden.
I am NOT going to protect or respect unattended property like an autonomous truck if it runs off the road or rams my vehicle or is a risk to my own safety, for example.
I’m pretty sure I’d be offended just having to ride behind it on the freeway as it drives precisely the speed limit in all traffic conditions - can’t say for sure until I’ve experienced it though.