The "van-style" ambulance. Not the typical modular body style ambulance. Vanbulances are often seen in crowded city environments where larger ambulances would have difficulty negotiating traffic, etc...
Not only are vanbulances fuggly (that's frigging ugly) the patient campartment is extremely cramped.
Vawulence simply means Violence, it's a Nigerian slang that started as a means of escaping Facebook ban and restrictions in comment section for using the original phrase "violence" that seems to has been blacklisted.