What automobile companies are not divisons of GM? Do they have a monopoly?

Question

Their company sales are going way down, but why is GM going under and what cars are NOT made by them ? seems like thye own everything

Are they a monopoly?

Answer 1

There are many companies not owned by GM.

If I recall correctly, the companies that make up GM are:

Buick

Cadillac

Chevrolet

Pontiac

Opel

Vauxhall

Saturn

SAAB

Holden

GM also has interests/shares in other companies but don't them outright.  Until recently for example, GM had shares in Fuji Heavy Industries which manufactures Subaru vehicles.  This is why you saw Subaru's being sold as a SAAB model ( SAAB 9-2 ).  

GM is not a monopoly however as there are lots of other car companies around.  Many of them are doing better than GM currently as well.  GM is still a very large company however.