Gravel [Steam], the "ultimate off-road experience" is a racing game from Milestone (MXGP, MotoGP and many more) and it's showing signs of coming to Linux.

Spotted by NuSuey from TuxDB, it does appear to be so. When looking for more details over on SteamDB, there's clearly plenty of activity going on towards a Linux version. It has a "Gravel Port Linux Binary" content depot as well as a "Mac/Linux port testing" locked branch on Steam.

It wouldn't surprise me if the port was being done by Virtual Programming, since their website still lists that they're doing a Linux port of MXGP3 (another Milestone game) which has been listed there for over a year now. Linux certainly doesn't have enough racing games, so this will be a very welcome port. It doesn't have the best reviews overall though, with many users and critics not too fussed with it. However, it's worth noting it's had quite a few patches to improve various aspects of it since the release back in February this year.

As for what the game features, it has four different disciplines to race in:

Cross Country: Huge areas with different layouts, perfect for competing in checkpoint races in the most evocative landscapes. Run through a waterfall with the aurora borealis as backdrop or try the right grip in the largest deserts in the world.

Wild Rush: The wildest locations where you can compete in lap races. Unique environments with natural obstacles that will force you to race your way through the slopes of a mountain, on paradise islands, and through masses of debris and quarry rocks.

Speed Cross: Races set in the most beautiful tracks in the world. Real-world tracks, from Europe to America, where you can show your skills in incredible jumps and chicanes.

Stadium: Real and fictional arenas, full of jumps and spectacular layouts!