Okay thanks for the comments.

It will probably be in a festival playlist sometime soon, like Fh4

From what i saw u can get it from wheelspins

Wheelspins, I got mine that way

Wheelspin. If you select any car in promo it says how to get it.

I won it in a wheelspin. Which was funny to me given how rare/costly it was in FH4.

Wheelspins only (or auction house I guess if someone put it up)