Generally speaking, young people under 25 can't afford high end cars.
At that age, you're either still in school (and can't afford a high end car), or if you only finished High School and you're working (and can't afford a high end car) - you are not making big money. Hell, even if you finished University, you aren't making big money at that age (and can't affor a high end car).
Sure, there could be a few exceptions (high end female fashion models) but they are going to be few and far between.
The logical conclusion is that it's someone else's car or money. (Most likely their parents.)
When I was in University - I was there going to class or studying virtually all the time. I took the bus. All of my friends in University likewise took the bus. One friend of mine had an old Chevette, another a K-car. Most borrowed the family sled. Hardly high end. In fact NO-ONE I knew in University drove anything even close to high end. Most were from fairly middle class backgrounds and their parents were not about to shell out for an education AND a high end car. Were there kids at University with high end cars? Maybe a handful I'm sure, but no-one I knew.
I had a similar experience in university. However recently, within probably the last 5 years or so, I have noticed that younger people are driving expensive cars. For the reasons you mentioned, it's unlikely they are driving them due to conventional success (i.e. go to school, get a good job, saving etc.). All you have to do is to look around at all the 18-25 year old SP's and MP's to know that any of them if they wanted to, could afford these cars. Add to that more young kids becoming drug dealers on the side, and what we have is a really wacked out society. I have to talked to many of my friends who have noticed this independently, and we all know we're this is headed: The destruction of our society. Nobody has a value system anymore, and the young kids are not taught and reinforced a good value system. Instead we let shows like the Hills, Jersey Shore, Peak Season, and all this MTV bullshit, combined with videos of young rapper/drug dealers making money send the message to our kids that the most important thing isn't integrity or hard work. It's money. And all these young girls are willing to do whatever it takes, including sucking thousands of cocks to get it. Boys, on the other side of the equation learn that it's easier to sell weed and other drugs than it is to work in Mc Donald's at $7.85/hr. So what we have essentially is a generation of young teens who prostitute and drug deal, and have no problems with that, in return for a new bag or shoes, or car, for that matter.
My problem is that people my age, including studio execs and tv producers, don't give a shit, and aren't smart enough to understand why this is a problem, because they also are fucking these young girls and snorting cocaine. So they produce these shows, and socially program children to desire to be a hooker or a drug dealer as if it's chic, before the age of twelve. Then these kids grow up with no value system whatsoever, driving nice cars, and we say "What the Fuck"?
I actually do care about what is happening to our society, but nobody else seems to. We let shows like the Hills tell kids that it's okay to be fucking pricks, and that's what they grow into.
I really think people should shut down MTV Canada and MUCH and CTV Globemedia in general. They are not doing a service to the population by putting on these shows. The same thing with advertisers who promote these shows. There is a difference in society, between those who own the networks and those who watch the shows. Generally, those who own networks are so well off, that whatever happens to the general middle class population, including kids becoming prostitutes, will have a minimal impact on their lives, as people from these and upper middle class neighborhoods like Yonge and York Mills to Yonge and Rosedale, having been snorting coke, and fucking hookers since they were in their teens, and their friends and parents the same. If our society self destructs, all they have to do is relocate, if they haven't already. It's the middle class and lower income families that really feel the impact of such social programming. They don't have as much financial resources to keep up or to relocate, so we end up staying here, while our kids watch this shit, and end up becoming drug addicts, hookers, pimps, and drug dealers.
This will not change until people get angry enough to tell these fuckers to fuck off.