Blizzard Mountain but no new cars?

I downloaded BM for my son at the weekend and it works fine, we can access the expansion all okay.

However it promised eight new cars with the expansion and none of these have downloaded / appeared in his garage / my cars.

Has anybody else experienced the same issue and / or does anybody know how to solve it?

I have tried XBox support to no avail and they have recommended I post here. Thanks for your help!

You need to go to the autoshow and then to the dlc tile and collect them from the “all cars” section
They don’t automatically get put in your garage
This is the same as ALL other dlc car packs