It's always hard to know exactly what has happened in a
relationship so got to take it all with a pinch of salt.
For all we know, the girl you mentioned has learnt her lesson in
life and realised there's more to life than just material
possessions. Maybe she really does see something in this guy that
she is willing to committ the rest of her life with him.
Coming back to the kind of person she was though, it really says
a lot about her as a person to have such a criteria when dating and
to be so flirtateous only because of whether the person has a car.
Like some have said, the guys themselves will access the girl as
well. If she acts like that it's no wonder guys are discouraged
from having a serious relationship with her, let alone
marraige.
About marrying at 34, frankly I don't really see anything wrong
in itself. What age you want to marry is a very individual thing,
moreover even if you want to marry you should consider whether
there is anyone suitable rather than just marry for the sake of
marrying at that age.
Marraige is a lifetime comittment, it's not just about looking
pretty when you marry but have someone be there with you supporting
you for your whole life. There's more to consider than about being
rich, pleasing parents or whatever.
Besides, for all we know the girl herself didn't want to get
married because she still wanted to play around with all those guys
who own cars, we really don't know.