 They left Paris on August 28, 1929, and drove to Brussels, Belgium.Their route then took them to Bonn, Germany, south along the Rhine River to Coblenz, Heidelberg and through the Black Forest.They then went to Switzerland, spending seven days and visiting Zürich, Lucerne, Interlaken, Montreux, and Geneva, and surviving a harrowing crossing of the Furka Pass high in the Alps.