Haha, the setting is genius: cars ramming into a powerplant and plants protecting it.
I lost my first run because I wanted to make the shortest route and as a result my plants didn't have enough time to destroy the cars. Then I understood the goal and once I figured out the building spawning pattern, I really liked making circular roads to make their paths as long as possible.
I wish it was possible to zoom out and also an option to speed up the game because once you get to a certain scale, it takes ages for the cars to go through my circles of hell before getting to the deadly plants that end their misery. All in all, I had fun!