Cars and Citizenship

Someone in a car forum posted a question :

Why are Chevrolet cars sold in Singapore considered American ? It is , afterall, rebadged of Korean-made Daewoo cars.

And why is Volvo, Saab, Opel and Mazda not considered American as well ? Since they are owned by either GM or Ford.

Ok. 2 questions and not 1..... It triggered me to a thought of citizenship, especially in Singapore, where we have lots of foreigners. What defines citizenship ? What are roots ?

And what is uniquely Singaporean ?
Am I still a Chinese ? If I am Singaporean, why must I learn Mandarin and the Chinese language ? So my roots are still from China ?

So what define the citizenship of the car ? Where it was made ? Who made it ?
What would you consider a car that is :
- thought of and designed by a German who lives in Korea,
- crystalized in a design file, residing on a computer assembled in Malaysia,
- emailed to his colleagues from Italy who lives in Thailand,
- has engine made in and shipped from Australia,
- has suspension parts made in France,
- fitted with rims and tyres made in Japan
- assembled in a factory by Thai workers in Thailand
- and sold by a company that orignates from America ?

What about an electronic company that is :
- founded by a man born in Taiwan
- who registered the company and brand name in America
- has products designed in Taiwan
- manufactured in China

Is this brand a Taiwanese brand, or American brand ?

With globalization and what nots, does it matter any more ? Is country or brand more important ? Or where the beginnings ? Roots ? What roots ?