So, I wanted to make a private mod of a Metro 6R4, and, everything runned well, until, I did the CTRL+E key (Vehicles), and nothing did show up, do you know what happened? (I checked the console)
you might want to try to reset the cache for the car. Documents>BeamNG>vehicles and delete the folder for the car your having the problem on. Or just undo the last thing you did to the car and press ctrl+r.
I didn't spawned it in game tho, I have a .zip file, and that happened before I tested it if it worked well, maybe, it can be that, I will check now
Your info.json folder is broken. Try starting it fresh from an official one again and make sure you don't break any syntax. More specifically your colours field is messed up, however the bug reporting isn't that smart so it may be something else in the info.json.