download a free 3D modelling app, like deled, learn to use it, and visually make your track on there, it will not be perfect, but its a worth while track, and import it as a .dbo or .x rather than .bsp, for .dbo you would need to download a seperate plugin on the same website.
Personally making a matrix and painting it on is a bit tedius, you will not have all the landscape like abilities with deled as you would with a matrix, but you want a track, so you are cutting your code down really, all you'll need to worry about is collision and other commands to do with racing.
And good luck with this racing game
And welcome to the forums
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