I find discovering these resemblances are usually amusing yet short-lived moments. It's like if you visualized the joy of a great idea as an incandescent light bulb (a common analogy) and compared it to a small LED light. I find human features, often faces, in almost anything like wall plugs, cameras, shoes, lamps, you name it and I do this with more ease than any word search, or Where's Waldo.
One of the most common things that will often glare back at me with an undeniable character-filled face is the front of a car. They roll around town with a twinkle in their bright headlight eyes, and some of them will even beam a smile at you or expose their teeth through their grille, which only brings to mind a flashy hip-hop trend of bedazzling (sorry, I meant blinging out) your teeth from 2005 and the song that started it all, Grillz, by Nelly. But I digress.
I do however, find it interesting that the cute-seeker approach was only applied on the North American model. When looking at the Mazda 2's launch site which directs you to specific countries, it seems Canada and the US are the only ones with the smiley car. It just goes to show that culture must indeed have a substantial effect on design. Psychological features like the smile might work on us, or maybe even in parts of Asia but apparently not in Europe.
Like I said, I like it :) Maybe it doesn't help that I'm a young Canadian-Korean female who really likes cute things but I also appreciate the design.