It's all marketing. They'll slap whatever brand name badge on a car if they thing it'll boost sales. An own brand identity, where each band has it's own 'personality' is clearly a thing of the past. Money talks... Sad, very sad.

- "Vauxhall" is way better known in the UK than "Opel", so GM keeps the "Vauxhall" name over there.
(PS: A limited number of Vauxhalls were sold in Belgium too, in the 70s)
- Chevrolet is a name that is known throughout the world. So "Daewoo" was re-badged "Chevrolet". And the "Lada Niva" was badged "Chevrolet Niva".
- There is/was one or more Mazda models sold as Ford in Australia.
- The Mazda B-series pickup is actually just a Ford Ranger.
- Saab builds european Cadillacs
- The old VW Taro pickup (few years ago already) was a Toyota HiLux.

etc etc etc the list is endless, and it gets worse every year.

Marketing, marketing!