When I met my girlfriend of 5 years I was driving a Mk1 Punto 60s that was in 3 different colours (scrap yard panels) and had a massive sound system worth more than the car twice over.
She was more impressed of how I could drive that car I think, but not becasue it made me look like Onslo from Keeping up Appearances. If I attracted a female friend becasue of my car despite her not being interested in cars, I would either use and abuse or just forget about it. That type of laydee is just odd.
Being young, I suppose having a nice car helps as girls like the stick it to dad attitude and the freedom of you having a car, regardless of what it is.