[bydo]

Ferarri and Maserati are already part of Fiat. Lamborghini is owned by Volkswagen.

Edit: My mistake, Maserati is owned by Stellantis, which is the parent company of Fiat's parent company, and Ferrari went independent in 2015. So this does still apply to Ferrari.

[stcredzero]

If brands don't survive as a separate company, then they could also do this as a division of a parent auto company.