Hi, greetings from Romania!
I am a Tatra-fan from Romania and I would be glad to hear when this add-on has a chance to be released. I watched your videos on youtube with this project and I remained absolutely breathless 
I saw that you didn't gave any sign about this project for months, and I thought for a time that this was abandones, and i am very happy to hear that you are working to this project.
And what's up with those photos? Are you re-doing the interior only, or the entire project?
Thanks and have a nice day! 