The driving is growing on me. Easier when using the handbrake when turning.
I felt like Jim Carrey in the movie where his life is tv show when he tries to sail away and hit an invisible wall. Took a boat and went out to the lighthouse and not far out from there is the edge of the map.
Oh, and have Jam Comms ready, especially when doing Gang attacks etc. so you can scramble civilians calling the cops.