*puts detective hat on*
I don't think this was a situation where someone followed him from the club in Brooklyn where he performed
I think it would be hard for someone to follow him for that long without him noticing (I could be wrong) and why would they pick Queens Boulevard of all places to shoot up his car
I think it was probably something more spontaneous
Like maybe he just got in to some random beef at some point between the hookah lounge in Queens and where he was murdered
Or maybe someone that had it out for him randomly spotted him and took the opportunity to kill him
Or maybe he was set up by someone he thought he could trust but I doubt it