We're moving
This design speaks for itself.
The idea came when I was working on another design.
Initially I just wanted to make a tangled mess of roads, that was intriguing to look at, but working with it, I realized that the design needed at twist, to have a story to tell.
I decided to put a small idyllic green spot in the corner, and to emphasize on the contrast between the two sceneries, I choose to use the same grey car all over, except for the yellow one in the green spot.