I think the idea is that the Metaverse will give you as close to the real experience of being in that specific car as possible, a video game won't do that because any car placed in a video game must be subservient to the goals and mechanics of the game.
The reason that giving you the real experience of being in a specific car is bullshit for marketing purposes is that you can see hardly anyone markets cars based on what it will actually be like to use them and of course because except for a few outliers using any specific car is the same as using pretty much every other car built in a similar time frame.
on edit: meaning every other car serving the same market segment of course.