72116342_Grand_Theft_Wiki__the_GTA_wiki__Description
[Ability] Explosion-proof [Code] EP [Description] 
An explosion-proof car is immune to rockets, satchel charges, bombs, etc. However, just because a car is explosion-proof, does not mean the car cannot be destroyed via cheats, or by entering the car whilst on fire.
Difference between revisions of "Special Vehicles" - Grand Theft Wiki, the GTA wiki