I havent seen many people discuss this, But im sure people have witnessed when playing as an Attacker or fighter when you are draining the enemy points, That you go sometimes and take out convoys of trucks and even tanks.
The vehicles follow the main roads, but sometimes the encounter a hill or random ridge and they just merge into the ground for a bit-
This sometimes causes bombs to not do any damage or effect and trying to shoot them or where they should be the rounds just hit the ground as the vehicles are under the ground.
This very much break immersion when you see randomly clip through the map. Not to mention drains your ammunition lol