I picked up Next Car Game: Wreckfest a couple of days ago and it's one of the most enjoyable racing games I've played to date. It's made by the guys who made Flatout and it's quite similar to that series. It's an early access game, so it doesn't have as much content as I'd like yet, but the game itself feels more or less finished.
I started playing multiplayer after practicing on SP for a couple of hours and it's a blast, even if you end up in the wall a couple of times. Just getting to the finish line feels like a victory in most races
I've written a more in-depth review of the game on Steam if you're interested: http://steamcommunity.com/id/zycorax/recommended/228380/