Is your stance that cars can’t be weaponized?
I think a car can certainly kill someone, and they do every day!
(as a side note I think "weaponise" is usually dumb cop speak, like you can technically weaponise a piano by dropping it on someone or weaponise words by uh saying mean stuff about someone or whatever, but it's unnecessary to talk in this stilted way and it is typically applied to suggest that someone was "armed" when they would normally be considered unarmed, much like expansively vague references to "violence", so I would discourage that usage for clarity).
most "car-involved deaths" are accidental, the result of carelessness and poor design, speeding, intoxication, bad weather, and the sheer risk factor inherent to humans directing large vehicles at speed.
it's difficult to hit a specific person with a car and so deliberate car attacks usually involve driving into a crowd of people, or rigging the vehicle with explosives (an actual example of a truly "weaponised car").
a car is more often a means of escape, but a risky chase or ramming another vehicle may result in injuries or deaths that cross the line from accident to negligence to manslaughter to homicide depending on exactly how it plays out on the scene and later in court; driving into a crowd to evade the police would be a horrifying car attack even if the driver had no particular intention of committing murder that day.
(a friend of mine was killed along with several other people in the 2017 Bourke St car attack; the perpetrator was technically fleeing police but was so mentally disturbed at the time that it's difficult to say anything definitive about his intentions or state of mind, he is serving a life sentence and Melbourne now has dozens of additional protective bollards as a result).
I think Homeland Security is far too quick to speak of "weaponised vehicles" and even "domestic terrorism" (!) in cases where people are clearly trying to escape or evade detention by ICE, or in some cases where they are attempting to obstruct ICE operations but clearly without murderous intent.
this rhetorical escalation is unhelpful as it contributes to exactly the kind of hostile interactions and trigger-happy outcomes that we are seeing, and it just doesn't seem necessary: there are already established procedures for law enforcement and the hasty ICE upsizing feels like a rushed botch job for political reasons where the chaos is desired as it shows that Something Is Being Done and reinforces the narrative that justifies applying a heavy hand.