Victor could be a good target of robbery

since he drives a nice car. But it is not that convincing. 

Typically, you don't have to kill your victim during robbery because you just want his money but not his life. There are quite a few violent crimes on the streets and police force are stretched thin. But it is very unlikely you can kill someone and get away with it. It also doesn't make sense to carry out the crime in early morning tarffic and right in front of the commuters. It makes the getaway extremely difficult. Besides, Australia is not like America. Gun related crime is rare. You don't shoot people unless you are determined to do it in advance.