Automatically generating of additional categories

Hi
Is it possibily to automatically generate additional categories look like {category}+{some parameter or some service}?

For example I have category “Rent a car”. Some organisation provides a service of cabrio or minivan rent. Respectively would be awesome to automatically generate new (sub)categories like “Cabrio rent” and “Minivan rent”.

And I need for directory visitors could find that organisation from Google search. They are looking for “cabrio rent new york” and find our page “Cabrio rent at New York”. Profit!

Or there are directory of real estate for sale. We have category “Flats” and flats could have 1 bedroom, 2 bedrooms and so on. And in order to a visitor who’s looking for a flat with 2 bedrooms found it, we need create a subcategory “Flat 2 bedrooms at {location}”.

Sorry for my english, I hope you have understood that I mean :)))

I think it would be done via tags, but it needs manually check for every listing. And if you have thousands listings and parameters it’s really impossible.