Lords of the Wards
Intercept the convoy and take out the guards. The target needs to be knocked down so be careful not to use excessive force (a.k.a. explosives) to stop his convoy. Mission will be completed instantly as soon as you knock out the target.
No Rules
You have to stop the convoy and knock down the target. The best way to approach him is to cause a traffic jam in the bridge to the east where the convoy will be passing through. The bridge has only one lane so by Driving a vehicle there, you can effectively stop the traffic and ambush the targets. The target has several armed guards with him so make sure you kill some of them before going after him.
Dockwork
The starting point of this mission is conveniently placed along the street where the targets will pass by. Wait for them there and take them out. Since there are a lot of trucks in this area, you can hijack one, block it in the middle of the road to stop traffic and to give you cover as you engage the target and his armed escorts.
Requiescat in Pace
You can catch up with the target or ambush him along his projected path. Take note that you must not kill the target. His escorts are heavily armed so make sure you have ample cover to fall back to when the firefight ensues. The convoy will be Driving limos so it’s quite easy to block them off or target them.