Junior and Mears are really shaking in their boots Nascar Officials

Dale Earnhardt, Jr. and Casey Mears have been punished by Nascar for their little skirmish in the desert last Saturday. Both drivers were placed on probation but neither were docked any points or received any fines.

Can someone explain to me what exactly Nascar does when a driver is on probation. Is it like purgatory, a fun in between to scare the crap out of young Catholics into behaving themselves but in all reality an empty threat? Or are there classes or community service involved? Because if you want to punish drivers, I think a monetary fine or docking points would probably do the trick better than being placed on probation.
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