We sneer at this idea, but women probably aren't far off the mark when they judge a man by the car he drives.
He probably has a good job, which implies that he's intelligent and reliable. Hard to hold down a high paying job if you can't be relied on and are too stupid to accomplish more than the most basic tasks He's not miserly. He's willing to spend the money he makes to improve the quality of his life. It follows from that that he like "fun" things like travel and vacations and such.
These are all fairly safe assumptions that can be made just from a car. Of course he could be a drug dealer too, or a guy who just blew his life savings earned from working 30 years at the one hour photo on a Lambo, but don't blame them if they correctly assume that those are low probability possibilities.