Season Pass

Hello! I have been contemplating on buying the Forza 5 Car Pass but I am unsure how it works, do you get ALL DLC or do you only get the eight 10 car packs? I was wondering because it would be a shame to miss out on 15 cars that i’m quite interested in getting, I don’t really want to go the extra mile and add an extra 15ish dollars on top of the currently discounted(?) $52.50 (AUS) season pass.
If anyone has any information regarding what you get in the Season Pass, please reply. Thank you

For most questions like this, start with the FM5 Game FAQ thread stickied at the top of the forum:
link: What comes with the Car Pass?