What is Considered Endgame/Beating The Game?

So I just started this pretty nice racing simulator and I have been really enjoying the different tracks and the invitational events although some of the controls are very slippery at points. I needed to ask you guys when I do eventually beat this game, what is the end game? Do I have to do a certain amount of Seasons as a racer? Is there an end credits scene? Does the game want you to complete all the tiers? (Although I would love to do every single tier to get a fully fledged experience)

I don't know if you guys have played this, but any help would be nice. I would like to know when this game ends so it doesn't go on forever. Any help would be appreciated.

I considered it beaten when I finished my career mode - went from Karts through to LMP1, which took 5 seasons and about 90hrs or so. I did have a few random races in there, but most of that time was spent working on career progression and then winning LMP1.

However, the game lets you start from any level and is very open in nature, so I would say just set yourself a goal that feels complete and then note it in your time submission when you post it. At least that way anyone interested can look and see why it took you however long it did.

Games like this don't really fit the standard timing formats, and completion times will always vary a lot, but at least people looking can see that some people spend a lot of time in the game, while others don't spend much time at all. Hence why adding a note to your submission is helpful to explain to others why you spent that time in the game =)