Hopefully this is the right place to post this. I didn't see a parts suggestion thread, but if there is one please direct me there, and I will remove this post as not to be redundant. Obviously GPS would be nice for those cars that already support a screen for it, However considering the campaign in the far future, or for just driving around in the game now, a purchasable/optional GPS that can be attached to the windshield, dashboard or vent as a part for all cars (without a built in nav screen) would be a neat option.