Actually, this new study only says that people like angry looking cars. But since everyone seems angry these days the title probably applies.
I'm sure this goes into what is considered a feminine car or a masculine car. It was certainly the case that Hummers were successful in part because they had an aggressive look (SUVs were not included in the sample). It wasn't as though people who drive/drove Hummers were interested in showing the world a softer side. The image was a large part of the brand.
I do like the idea of further the research on car preferences by studying the issue in Ethiopia, where most people don't have cars and they certainly aren't subject to as much automotive advertising as in the US or Europe. It might be an actual field experiment (rather than quasi-experiment) in the social sciences!