Maybe it's political or religious terrorism, maybe it's suicide-by-cop, maybe it's a generic mental health issue (think schizophrenics whose head voice tells them to commit violence), maybe it's a health issue (heart attack, driver floors the gas pedal), maybe it's a streetrace gone wrong, maybe it's a DUI, maybe it's a mechanical issue (loss of brake/steering), maybe it's a geriatric driver who just doesn't have any idea where he even is, maybe it's a driver blindly following Maps and ignoring the policeman winking at him, thus not noticing he's heading right for a rally.
You see, the list of issues why a car plows into a crowd is very very long, and often it takes the police hours to determine what's going on. They gotta interview bystanders and victims, they gotta obtain and review camera footage, possibly search the driver's home and digital devices - because unlike Twitter pseudo-journalists and click/ragebait "news" media, police can normally be held accountable if they claim something in public that doesn't turn out to be true.
So it'd be nice if they'd say like "a man has ploughed into a crowd" - we'll safely assume he didn't use an actual plough since I hear those are fairly slow.
It does make a difference regarding people viewing news outlets as informers rather than an arm of some kind of agenda.
Well, not in Europe because that's the culture, but it objectively is.
And I mean, it's not like the racists hear "a car" and think "oh it was just a car on its lonesome, not like driven by a person from [group that I hate]", do they...