Categories limit

Hi :-)

My categories is based on cars, boats and mc's. The taxonomy term Cars structure is like this:

Cars
-Audi
--A3
--a4
-Bmw
--318
--320

When I enable the taxonomy type Cars all the terms is shown. Instead of showing car models(a3, a4) I would like to it show car type/brand (Audi, bmw). When the users click on Audi, car models will show. Is this possible?

Tnx