I’ve spent the past 2 days putting all the add-on vehicles on the server into category packs.
This is to lower resource number and reduce latency on the server, on top of other benefits this brings. 
The car filing has been 100% successful so all vehicles should work as before.
Make sure to report any errors into #bug-reports or on our discord. 
Next thing on the list is to fix all the names of the add-on vehicles, as well as remove common ones and replacing with newer vehicles. 