I havent read any of the comments really, but to give my opinion on the OPs question:
I dont really think it hurts. Most girls want a successful guy especially for long term if thats what they're looking for. Of course, success shouldnt really be measured by the materialistic things you own, but a lot of times its the only measure of typical success; ie. big house, nice cars, nice clothes, etc.
For IA, I dont doubt that having a nice car would get you some poon, some disease used up poon that is.