This is a training-car for accidents at oil-transports. P 10070 is owned by the authority for the environment of canton Graubünden and registered by Viafier retica (RhB). A close look explains why this car could only be driven if empty... Seen in Tamins on 14th of June 2005. 
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Photo by Arnim v. Herff (arnimvherff@uni-duisburg.de)