Should I release it? It doesn't run all that well...
With game, I began as a pure scanline racer, but when the time came for placing the cars on the track, I end up cheating a bit and adding proper 3D projection (floating point on the web version, fixed point on the experimental DOS version).
There are some very good tutorials and articles on the subject, but I'm not familiar enough with GameMaker to suggest anything.
Sometimes I feel I should get more familiar with those technologies...maybe I could start shipping more games instead of my current paltry rate.