Foreveracers [Steam] is a racing game with hilarious physics and handling, I quite like it and it's going to finally release on Steam on March 29th.
What makes it interesting, is that it's entirely online. You load it up and you're dropped into a sandbox environment to drive around, join races and challenge others. There's a day and night cycle, so you might start a race while it's light and finish when it's dark, which is pretty sweet.
Here's a new trailer the developer put up:
There's 12 different circuits to race around, with 4 initially unlocked and 4 you need to drive around and find and then some mirrored variants too.
While it is online, you don't have to race against people directly. There's also the leaderboard, so you can jump in anytime and see if you can smash-out a quicker time and rise up the ranks.
I've had access to it for a while and I can confirm it works rather nicely on Linux in terms of performance. The Steam Controller worked out of the box too, without any adjustments needed which was really nice to see.
With the release on March 29th, it's going to be a full game, not Early Access. However, the developer does have plans for additional updates. They've said these will be in the form of free updates, so that everyone can play together.