It wants you to have fun. It will challenge you, it will ask you to improve as a driver and it will reward you for doing so. But first and foremost, it wants you to spend time in this ridiculous playground, with some of the best (and strangest) cars in the world, having an absolute blast.
Get a bunch of equally enthusiastic friends together and you'll have many hours of nostalgic revery, with that Williams score nudging you through match after match. But then you'll reach the outer edge of this game's progression system, or you'll get a little too familiar with the four landscapes on offer, and the magic will wane. And then, of course, there will be downloadable content, massing in a distant corner of the galaxy, waiting to invade.