My sister (who is 24) still lives with my parents and drives a BMW 500 series. I was absolutely appalled when I came home to find that out. Speaking of bad money-management, I overheard her saying to someone on the phone that she makes minimum payments of nearly $300 a month on credit card debt that she's managed to accrue. On what??! All she buys are clothes! She hasn't grown or gained or lost any weight in almost ten years! How many pairs of clothes could she have bought to accumulate that kind of debt??
Also, in the spirit of this thread, she makes over $30k a year as a dispatcher with a high-school diploma. I suppose the guy you're bringing over will have more opportunity for advancement than she's likely to ever have, though.