An Economic Policies for the 21st Century editorial looks at what is happening in Germany:
Were Eurostat to use annualized rates like the United States' Bureau of Economic Analysis (BEA), the German growth rate would have been 9.1%, which means the German economy grew nearly four-times faster than the 2.4% annualized growth rate recorded by the U.S. economy in the second quarter (Eurostat quantifies the U.S. growth rate as 0.59%). Over the twelve months ending in June, the German economy grew by 3.7%, half a percent faster than the 3.2% rate recorded by that of the U.S. More significantly, German growth has accelerated at the same time as growth in the U.S. has slowed markedly.
There's still room for an article with more detail on just how Germany accomplished this, but what it's not doing is piling "stimulus" atop "stimulus."