It is well done. Nice graphics, physics and it's fast. However the gameplay also feels a bit pointless now. You just drive around and do some stunts, maybe trying to beat the clock. There seem to be no other goals and objectives and no opponents.
Thanks for the explanation. It's good to hear there are Linux developers in the team now.
It does now using CMake. There is also a package for Ubuntu.
Since few weeks 2 linux programmers joined the project and they have successfully build and run the game and editor on Ubuntu and Arch Linux.
For more info check the Wiki pages Compiling and Packages on out Project's homepage.
Does it really run on Linux ? Last time I've heard about it, people complained that it was impossible to successfully compile it (at least without major code modifications).