Nope, Wesley, sounds about right actually. Machine guns aren't supposed to be deadly accurate, they're not designed to be (that's what snipers are for). They're supposed to lay down a large volume of fire in a short space of time (600 rounds a minute, or thereabouts, per barrel) within a reasonably (not precisely) accurate area to suppress (i.e kill for preference) hostile activity.

A car heading towards you at any sort of normal road speed is probably moving faster than you'd like (machine guns are really anti infantry weapons) & unless the road is dead straight & the car is heading directly towards you...

The saddest part of this is the death of Nicola Calipari, a genuine hero in a world & age that uses superlatives much too freely. The next saddest thing is that no-one will ever know the truth of what happened. The US military is not going to tell the truth, because the military never does (the US is no worse, & not much better, than anyone else in this regard), even if it knows what the truth actually is (not always the easiest thing in the world to establish). The eyewitnesses are in no position to be objective.

But a very brave man is dead as a result. RIP Signor Calipari.