I'm not too sure, really. If anything, a lot of this generation are more likely to follow trends. Look at the success of the iPod: the player itself is nothing special when compared to the competition, but because it's stylish, and is regarded as something of a symbol, young people buy it, often without comparing to other brands.
GM is like the Zune, in a lot of cases: it's just as capable, if not, way more, is often cheaper, offers more for less, has a few extra little goodies, and has decent enough looks. But the thing is, well, it doesn't have that 'je ne sais quoi,' like the iPod. The iPod is fashionable, the Zune is more workmanlike. The Domestics are viewed as something for poorer people, or those who are blue-collared. Definitely not true, but that's what I get from talking to people, who are looking to buy cars, or ask about mine.
Just this morning in my economics class, we were discussing the GM situation, and most students in the class believed that GM still builds only gas guzzlers, and that the cars fall apart. The age group in this class is 18-23'ish, and predominantly middle-class, 'west-coast' types, the very people GM needs to target.
Priorities have changed too, I think; now it's all about gizmo's and gadgets. Family friends of mine bought their daughter an Aveo; the daughter didn't care when I said it was a piece of crap, and that the economy was subpar compared to a Cobalt, or Fit - instead, she loved it because it had a six speaker sound system, and she could wire her iPod (which she also bought, despite my saying other units were better ) into it. I think GM missed the boat in that respect, especially when they took their time putting Bluetooth into their vehicles, and not trying to at least ape the funkiness of Scion in a couple ways.
Another thing is that many first car purchases amongst people my age, are used vehicles. Of course, brands like Toyota and Honda have a higher perceived quality. A kid who wants a car will want something that's going to last, and mom's old Toyota Camry, while boring as hell, will get them to A & B, with little trouble. Also, younger people are less able to deal with high gas prices, so a used import is also desirable, because once again, Honda and Toyota are said to get better fuel mileage. While that's not always true, it's what is believed.
The impression I get is: When we want something, we want it now, and doing research is for school. Even then, Wikipedia is all anyone my age is going to look at.