This isn't going to be a game. They wanted to show UE5 working on current gen consoles and showcase the tooling, for example the city was built procedurally wit

This isn't going to be a game. They wanted to show UE5 working on current gen consoles and showcase the tooling, for example the city was built procedurally with Houdini. Even the free roaming is impressive, the whole scene is lit by the sun. They recognized there are still things to work out like the car collisions that you mentioned, all the cars are rendered with nanite until you collide with them, at that point they are being swapped to "traditional" models. I mean for a tech demo it even has way more consistent pedestrian and vehicle simulation consistency even a way long distances than AAA games like Cyberpunk 2077.