I think I have figured it out... So you start by placing obstacles on the board, not touching each other, so there is one block on each horizontal and vertical line of the L-shaped track, kinda like Sudoku rules.

Then each turn you place another block (2x1 this time) somewhere on the board or move a block that has already been placed.

Then both players pick a direction and move both their races as far as they can until they hit something.

Is that right?

I guess I had better figure out how to upload a dev log or something with images to demonstrate what I'm talking about in the rules, since it seems like some people are having trouble understanding how the game works.

This is exceptionally simple, and does a wonderful job of meeting the criteria. Granted, I'm reasonably confident that one of the two ending edges should have been a starting edge given the rest of the rules, but eh.

I will be honest, I have read the rules twice, but I can not figure out how this is to be played, or how you would 'win'.  Can you make a video or some pictures?