I am sure some Ozbargainers have done this.
My wife and I work in two separate places, both 10km or so from the end of the common path, she drives east I drive south etc.
The first 40km of the commute is the same. Is it possible to leave one car permanently Mon-Thu overnight in a street in order to save fuel.
The only thing i can think of being a problem, is letting the insurance company know where the car is parked overnight, and explaining the plan, but I doubt they would understand.
That diagram though…shouldn't M have a line to X?