Yes, the ZalaZone test track is available as a CarMaker roadfile.

The CarMaker .rd5-file of the test track have been published on Github by BMEAutomatedDrive and can be downloaded here:
https://github.com/BMEAutomatedDrive/ZalaZONE-automotive-proving-ground-virtual-simulation-models/tree/master/IPG%20CarMaker

General information about the proving ground can be found here:
https://zalazone.hu/en/introduction/