...The idea originated with me. But it probably did not.
Basically, imagine you were a city planner with information on where everyone lives and works. You'd see zillions of lines showing the paths everyone must travel in their daily lives. With the goal of shortening and decongesting those paths, there would be many reconfigurations of the home and work points which would yield vastly shorter travel lines.

The gain would be vastly reduced fuel consumption, less expense, sometimes no need to maintain a vehicle at all, and also longer periods of free time for family, household, education, leisure. because of the personal benefits, this city planner could expect that many people, landlords, and employers, would happily go along with the program of reassigning home/job places to individuals... rarely in direct swaps, but rather in a complex reshuffling.

Now, the primary interest and benefit would be for lower income people or the presently unemployed. Having been poor, I know that this is a desirely concept, although one that the lifelong middle class might not see the appeal of. Employers and renters to the lower income demographic, however, would likely see the potential.

I wrote about this a while back here:
Blueprint For a Radical Democratic Platform