I think the two questions are at different levels of development. Preventing virtual inflation is a big picture. What specific penalties are is little picture. If the virtual economy question had already decided on money sinks and was then asking "What kind of money sinks could I implement?" Then I think it would be off topic as well.
If your question were to ask something like: "How can I discourage unskilled racing? i.e. drivers running into obstacles, other cars, ect." Or "How can I encourage racers to avoid obstacles, other cars, etc.". Then I think it would be more inline with the virtual economy question.