DISCLAIMER
I don't know about girls/women the way I know about jeans and suit (although I lag there compared to most apparel forum experts even there

). Yet, I would like to add a possibility of what might have happened.
In case she is single, she might have thought that there might be a possibility of a relationship with you, in case she isn't married, that is. She might even be thinking on the lines of marriage because 26 is a marriageable age at least in India.
However, when she found out that even at 26 you didn't own a car then she thought that you weren't as well settled as she thought you were and therefore she was disappointed/slightly taken aback. Because it is a fact, when it comes to marriage, although all women might not go for the richest guy they can, they definitely want somebody who is comfortably well settled and well off. They expect you to be able to soon afford a house if you aren't paying your EMI already or haven't inherited one and can afford another one if required. They need you to be able to own at least two cars, one for you, one for her, and later down one for each of your children of course. So basically somebody who earns enough to run a family even if she doesn't contribute or doesn't contribute as much if nothing at all.
So basically, when it comes to marriage or a relationship in your mid/late 20s, your position in society and your profession and income does play a MAJOR role to 95-98%+ of the women out there. You need not necessarily be the richest, but you should have a comfortable standard of living and that does means:
1-2 cars
Outing of 2-5k each at least once or twice a week
At least 1-2 vacations a year and sometimes abroad
Enough to settle your kids education in the long run
etc
And whether or not this will happen, they usually want to see in the 25-30 age when they plan to get married. So if you are from IIT/AIIMS but just earn 30-40k a month, they know when the time comes, you would earn 10-20 times as much. But otherwise, they know that would never happen. And so they forget about it.
I know that I am being hard, but I am just trying to tell you the truth. Maybe she really liked you and wanted a steady relationship, but wasn't prepared to have it with someone who was one step down, rather than at the same level or one step up. I don't mean to be harsh, but somebody has got to tell you what could have been the real reason. Sorry mate, but I guess you have the right to know the answer to your question. I really don't want you to feel sad, but to work hard for the future.
On a friendly note, why else do people think I give so much importance to money

LOL
Anyway, I hope my post does clarify some things which you could perhaps bring up with other women or her later or soon in life and see what happens!