Not sure about specific German soldiers asking that specific question, but I've heard the anecdote from a couple books about the post-D Day U.S military operati

Not sure about specific German soldiers asking that specific question, but I've heard the anecdote from a couple books about the post-D Day U.S military operations towards Germany. It's plausible though; the U.S Army was by far the most mechanized of the war in Europe. Germany's massive "mobile army" during Barbarossa and during the Polish and French campaigns before that was something like 80% literal cavalry and only 15 or 20% mechanized (taking aside marching infantry). These percentages never changed much during the war for the Germans.