Probably no further in single player than you. It looks great but time will tell whether it has significantly more depth than San Andreas, at the moment it is a pretty upgrade to me.
I wanted to get stuck in without reading the manual or anything else, so I guess I will read up about aiming and cover now! Would like the option to change the camera too, which I guess is in there.
I got some Smashing Pumpkins during one of our races, but hoping there is a talk radio with Lazlow somewhere.