In this section, you'll make your vehicle's windows breakable in the event of impact or shooting.
It's also possible to take this a step further by making the windows of the lights breakable, using the same method as for the windows, if you add collisions to them.
If a pane is unbreakable, the collision has not been correctly positioned as described on page 9.
Without this step, your windows will be invincible, even in the event of an explosion or extremely violent crash. Most of the work has already been done at the page 9 of this tutorial with collisions, all that's left is to apply the correct settings as shown in the video, and your windows will be shatterable.