i'm learning that those short answers usually aren't the best sign. Maybe it means that if you discuss with here more then she might be more definite, but that could go either way. I think it means that she feels like you will just decide to buy a car, and she'll deal with it.
when there's "no money" for cars, she probably won't want to hear about any cars no matter how cheap, even a 69 skyline for $1, even if you just say look theres a nice one.
i think women tend to be practical, they think we each already have a car that runs, and you're not jay leno - so that is enough cars ( especially when there's nowhere to park another - that probbly isn't running too well - or will be inoperable soon )
it could mean that she is jealous of the car.
This isn't the first time i've posted one of these if i buy any more ... or such my wife will be pissed, but at least there wasn't anything that happened, i just saw that engine and started daydreaming.
It's probably a good thing to figure out ways to make project cars and marriages work together.
maybe there needs to be a wife diagnostic thread in off topic, something like - every time i talk about cars my wife makes this weird ticking sound... Have you checked her oil? etc...