Reuters: Three German biodiesel production plants were recently sold to the United States and Canada and more are up for sale after biodiesel sales collapsed, a German renewable fuels industry leader said on Wednesday. "I estimate that 30 percent of Germany’s biodiesel plants are now up for sale," said Peter Schrum, president of the German renewable fuels industry association BBK. "Three have recently been sold to the US and Canada and I believe that more will …