It's about a migration model for jobs I think.

You have two jobs, one in the city at weekends and another in the suburbs. You're out of the way for commuters and don't need to commute for long hours.

In the suburbs you might be paid to be there instead of paying to be there because you might be providing services like security, gardening while in the city the job might be cleaning.

A lot of people would like somebody trustworthy keeping an eye on their property while they're at work and there are a lot of vacant parking spaces in cities at the weekends. I haven't quite worked it out because when the commuter arrives home you might be in their space but maybe somebody can offer another version of the model.