While that is neat to see.... want to impress me? Make it so you can get INTO those cars. Make it so that the buildings you can fly through a window and see what is IN those buildings and interact with them.
We've had games where you can fly around a 'city' where all of the buildings might as well be carved rocks with painted on windows. It's time for this engine to show us what the NEXT level can be. I don't care if the interior contents are procedurally generated. I don't expect a team to meticulously plot out the floor of every building in a city. I DO want to see something next generation where the interior of the building can be blasted through, interacted with, and such.