The car doesn't have a distance model since it just came out. So when it is far away it defaults to another model then comes back into focus when it gets closer. The car is in noway finished as it was released 2 days ago. It takes them 3 months or more to get to the point where it is finished. And even then they will add a new feature to the game and break it.
The track just came out for Christmas. Like the car it will take months before they fix the grass and other features the way they want it. If I can find some of my old track videos I will upload some to show the difference when they polish a track.
Last thing I want to say is hope you have a SSD for the game to run off of when it is released. It has a ridiculous amount of textures and every car has different decals. I experimenting with 50+ car A.I. races in the alpha. Hopefully they leave in the option, but optimize it more. So far they have done a great job with listening to feedback so no doubt it will get looked at.
Pretty sure 99% of the people who plan on playing this game have SSDs (myself included). Extremely excited about the game since GT3/GT4. I moved away from console gaming so it's been awhile.