The 110 meter long self-propelled car tranport vessel Kelheim became disabled on the Danube River near Vienna, Austria.  The Kelheim had suffered an engine failure while proceeding upstream and had to drop anchor to avoid going adrift.   The Kelheim, with 100 small cars on board, blocked traffic on the river until another vessel later pulled the Kelheim into the harbour at Racklau.  No reports of injuries, damage or pollution being released.