It sure _may_ be. Nevertheless, the efficient way of solving the problem is making concise and accurate rules, and perhaps explicitly expressing the intent.

If the rule or intent is ambiguous, problems may be considered inevitable.

In the above game, you really can't guess the intent. Of course this is partly, because it's an abstract example. But the intent can't really be "no cars or carsy things", because the real intent in "no cars in the park" would be perhaps a combination of no loud noises, no high speed, no heavy objects, no pollution etc.

I realize this may not be an agreeable point since I only got 11% in the game with the assumption that a vehicle is something used for transport (excluding wearables) and that the rules would be seen somewhere in or around the park (so not in the air).