Here's what I find difficult to understand...

The driver survived. If the people at the checkpoint were so concerned about the vehicle being used for the purpose of causing damage to the airport or anyone in it, or even to the people at the checkpoint, why were they firing all of the bullets into the passengers in the back seat, instead of into the driver? And if, as I've read somewhere, the driver was approaching the checkpoint personnel on foot, with his hands up (hence his not being killed), why were the checkpoint personnel still firing bullets into the passengers in the back seat?