That figures. It's tough to make a kill shot on a moving vehicular target with a spray and pray roadside ambush, set up in hasty fashion. My guess is that there was prior intell on convoy route, and the exact vehicle in which the target was riding. Possibly even info on exactly where in the vehicle the target was sitting. All that would be required would be a decent marksman and a good position to make the shot.
The fact that they used a sniper is telling. It makes it so much more personal than an IED. Indeed somebody is sending a message.
FNC just showed video of his car
There are several bullet holes in the side window
I just saw a pic of the target car on Fox. Half a dozen bullets entered the drivers window and dented the passenger door in a tight group. Windows busted out.
I think it was more personal than that:
According to witnesses a car crashed into the ministers car from behind. Then the assassin got out of the car, walked over to the ministers car, and fired from close range.