I would do it for free, just to answer the question of what does a genius of his caliber have in his garage? Probably the same stuff most people do, but it would still be interesting.
I don’t think the point was about having a clean space, it was in response to a question along the lines of: when do you think we will achieve AGI?
How much is the robot going to cost in a year? 100k? 200k? Not mass market pricing for sure.
Meanwhile, today he could pay someone $1000 to clean his garage.