The latest update to Slipstream has been published, and it brings the minimum requirements down to the lowest possible versions of OpenGL and related libraries. Hopefully this will fix compatibility issues some users have been reporting. There were also small changes to the gameplay, mainly reducing the amount of traffic on arcade mode, which has been an issue for some people.
Some users have raised the topic of key mapping, since Slipstream doesn't allow it yet. I have taken note and will try to add this feature on the next update. If the compatibility problems are fixed, I'm gonna start working on the 1.1 version ASAP, which will include a local multiplayer mode. That's all for now.