Every road, junction and forecourt is the real one, rendered from aerial survey. Not a city like London. London.
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The ground is photogrammetry captured from the air. The roads under it come from OpenStreetMap — the same data your satnav uses — so junctions connect the way they connect in life, and a one-way street is one-way here too.
Pull up at a petrol station and it is the petrol station that is there. Its forecourt is the shape of that forecourt.
Next in the survey queue.
In progress
First city outside the UK.
Planned
Kerbs stop you. Walls stop you. Hit another car and it costs you.
Empty the tank and the engine dies where it stands. The nearest pump is a real one, and it may be a long way.
Any car on the street will start. Whatever fuel the driver left you is what you get. Walk away from it and it is towed.