I've been playing this for a few days now and, well, I was wrong, I simply need to take back everything negative I've said about the game. I usually don't touch 30fps racers, I get them used or at extreme sales instead just to vote with my wallet, but I got this game for free because I got the PS4 a few days late, and wow... It's really great! First off, the graphics are easily the best I've seen so far on PS4, Killzone and Resogun included, with fantastic textures, detailed geometry and effects with storms and rain etc that is simply outstanding. It is 30fps though but they've managed to hide it well with motion blur and the awesome visuals, and the sense of speed is crazy. The sound is equally great with engine roars that should make GT devs blush of embarassment. The crashes are awesome too with Burnout level of details and destruction. And it has fantastic controls and it's fun!
Don't miss it! I started it up just to test it since I got it free but I've ended up playing this more than any of my games so far.