What were they thinking?

Apparently the Elk River (MN) Chamber of Commerce were having a fundraiser based on the prediction of when a car would break through the ice on Lake Orono.  The MN Gaming Enforcement Division put a stop to the fundraiser.

What I don’t get is how they thought this is a good idea.  Why would anyone want a car to end up at the bottom of the lake.  And if that car isn’t drained of its fluids (which would probably still leave some residue) you are creating a source of pollution in that lake.  Even if they drain the fluids and then get the car out of the lake, it is a stupid and wasteful idea.