I live streamed the game when I first got it, so allow me to explain the gameplay on PS4.
Pros:
The physics are bareable. I'd call it half HP2010 and half The Run, they seem to have found a happy medium.
Running from the cops can actually be a challenge, especially if you're in AllDrive and have a human cop start chasing you.
The cars look great, so does the scenery, the PS4 can produce some great graphics!
Cons:
The storyline is so horribly cheesy.. Dear god.. Hire some actual writers..
AllDrive has a fatal flaw, when the host leaves, even if you're in the middle of a police chase, you all have to go back to a menu and connect to a new host. It essentially ruins whatever you were doing.
If you watched the livestream, you know what it looks like - it's been fun! It's not a "non stop playing" kind of game, but it's fun for a few hours every few days.