The suggestion is not in the Car Crushers 2 Trello Trello
It has not been suggested in the forum already (Search or check the “your topic is similar to…” tab)
If it already exists, like that instead to increase the chances of it being added
please add the ability to click on a button called “Put material on unlocked cars”
To not waste time, You can press the button and will apply the material on all cars, The material will be automatically equipped on new cars you unlocked.