Man, using tilesets has spoiled me, because it took me a minute to figure out what everything was.
I’d recommend looking for studies and data related to the various acts of terrorism over the last century if you want background information for more realistic effects of explosives on vehicles and the surroundings. There will be plenty of cases to draw from, with various locations of the explosive (inside the vehicle, below the vehicle, etc). Police reports and similar would have pictures of the damage to the originating vehicle and surrounding area, as well as estimates of the explosive yield, composition, and other data.
Police & military reports from England & Ireland during the “Troubles” would be one possibility. Military and scientific papers on the various carbombs and truckbomb attacks in Israel, Afghanistan, Iraq, and the suicide bomb attack on the USS Cole are some other possibilities.
You might end up on an NSA watchlist googling all this though lol.