Not only in in those countries. There is a company in the Netherlands which is still using 12 halftrack's. There was recently a big refurbish program for these old soldiers. Just look at the pictures on the following link.
http://www.flickr.com/photos/skitmeister/4802197100/
The pictures aren't taken by me.
The reason that they are still using them is, that the owners can't find replacements with the same qualities. They are used for building high voltage pylons.
Ofcourse they aren't used as a bus.
Paul