not really a bug, but not really a suggestion either…
Small thing- its not possible to use the delete key to edit car model names. this is also true in the production schedule window.
also when you create a copy of a car model and then go to rename it, if you begin to delete part of the name and the new name would be the same as a current car model name, it does not allow you to delete it and undoes all of the changes.
this is mostly just a small annoyance when you unlock new car designs but it would be great if it had a proper solution