Flashing its lights for the guy ahead to get out of the way, Schwarz Group continues to thunder down the fast lane of the international retail autobahn like a Porsche Cayenne.The secretive Swabian parent of small- and big-box discounters Lidl and Kaufland now looks almost unstoppable on its route to world domination.Meanwhile, the sober clique around elusive founder Dieter Schwarz at head office in Neckarsulm must be almost drunk with success. Exaggerating? Just look at the needle on the speedometer, dear reader, you'll find the latest figures exhilarating...