I mean you see vehicles as explosive delivery systems, you’d had VBIEDs all along in the sandbox wars, but not as an assassination method, like somebody starts their engine and explodes.

I mean a big part of it is explosives are more controlled, since the OKC bombing even precursors to improvised stuff. There were supposed to be bombs exploding at Columbine, remember?

(Huge sections of Anders Brevik’s 2083 attack manifesto/memoir are about his experiments with explosive manufacturing, when by now people only even remember the Utoya gun stuff)