Turns out this has been done already. Yesterday. Yeah, yeah, my bad, carry on :p
What would you be? I'm not asking about your favorite car, or what car you'd like to be, but if you suddenly became a car, what would it be, based on your personal traits? I'd probably be this:
An Opala SS. It's brazilian, of german descent, but heavily inspired by the USA. It's impractical, unstable, drinks a lot, and looks mildly though (if you squint), despite not living up to it at all. It's also outdated, a bit of a fatty and looks like it has a unibrow.