Eyes on the road racing fans, as F1 2015 is currently going free to grab a permanent copy and F1 2017 has a free weekend with sale.
On the Humble Store, for little over a day left you can grab a copy of F1 2015. While Humble Store doesn't mention Linux support with a platform icon, it does support Linux (it's a Steam key) and they do list Feral Interactive as the developer and publisher for Linux.
Meanwhile on Steam, if you fancy something more recent (and much better overall) you can try F1 2017 for free for two days and it's also on sale with 70% off if you like it!
Pretty good weekend for those interesting in racing games but haven't checked out either yet.
Also, totally unrelated but you can also grab a copy of Lethal League for free from Fanatical.