Have you perfected the technique of controlled explosions? Can you give me a guarantee of 0 collateral damage?
That job needs a very small blast radius.
Collateral damage to people or to buildings?
I mean it's a delicate balance. Not enough explosion and there's still some car left. Enough explosion that there's not a lot of car left and there's always a
little bit of shrapnel. The solution is just to make sure everybody is looking at something else right before the explosion, and to stand a reasonable distance (say 15-20 feet) away from the explosion. But our backs would be turned to it, and we would walk forwards while never looking at the explosion.
If we're worried about shrapnel though, arson is another popular choice. Not quite as dramatic though, but there's less to clean up after. Or a small explosion with arson as the objective. You still get the explosion, but not as much mess.
You've got options though.