Very likely someone is tele-operating it remotely but this is a great way to generate revenue while they collect the data. Basically the Tesla FSD playbook, car customers are data collectors.
In China, autonomous and semi-autonomous house cleaning robots are already a thing, and they're not $30/hour. They are ~$17 for 3 hours of cleaning, and they come with a human cleaner too!
The company is called X Square Robotics. This is a walkthrough of how it works.