I wasn't really thinking in terms of bombs or even deliberate attacks. The OP was clumsily written, sorry. I was wondering aloud, as much as anything else, whether seeing this kind of thing – where all the damage is done by a motor vehicle, no specific weapons – would have a side-effect of making us more conscious of the responsibility of being in charge of such a large, fast object. Yeah, ridiculous optimism, I know.
Unlikely. Consider the differing reactions to a theoretical lorry-vs-crowd incident, once it's revealed that:
a) the driver was an Asian Islamic fundamentalist who drove into the crowd deliberately
b) the driver was a white neo-nazi who drove into the crowd deliberately
c) the driver suffered an unforseen medical problem resulting in a sudden loss of control
d) the driver lost control of the vehicle because the vehicle was undroadworthy and suffered a predictable mechanical failure
e) the driver swerved into the crowd accidentally because they were concentrating on their phone
f) the vehicle's AI drove into the crowd deliberately to avoid hitting a wind-blown plastic bag at higher speed, mistaking the crowd for foliage
g) the vehicle's AI drove into the crowd accidentally due to a computer virus that inverted steering outputs at 13:37 on the first Friday of the month