Using conditionals with userfields and templates

I am trying to familiarize myself with vB3's great new features and maybe someone could help my out as I am very confident what I am trying to do could be accomplished through simple tweaks without any modifications to the vB source code itself.

I run an automotive forums website and it would be great if the users could enter their vehicle information as part of their profile.
The fields would be:
Vehicle Year (such as 2003)
Vehicle Make (such as Nissan)
Vehicle Model (such as 350Z)
Vehicle Trim (such Touring)

However, quite a number of users have more than one vehicle. During the registration/profile modification process I would like to have a field that asks users how many vehicles they own and then the above fields will show up for the number of vehicles they have so they can fill out all 4 fields above for each of their vehicles.

So if I put down that I have 3 cars, as soon as I change the option to "3" from a dropdown the above fields will show up on the page 3 times.

Is this feasible in vB3?