Bought GTA V. After the initial missions, did the usual. Explored and "test drove" cars. A Boss 302 is pretty slow when you want to pass tractor trailers on two lane roads. I was happy to find a pre-86 Toyota pickup, and excited to find a '50s Powerwagon. Which I promptly destroyed on a mountainside. Whoops. Hit some deer. Punched cows. Literally.
The cops are definitely modeled on the LAPD. Expect to see many shot up blue pickup scenes. The police will and do react to NPCs as aggressively as they do to you. Strangely, I got in more trouble shooting coyotes than dogs. Professional courtesy?