Businesstrip to Frankfurt, after standinng for 2,5 hours ins severe traffic jam (the motorway was totally blocked), we took the byroads. But My Collegue had to stop for a short sanitary stop, by chance at this stonebreaker factory. It took just two minutes to make the pendrawing, and maybe another 10 to paint; we were driving again by that time. Exlaines the wobbly lines.
Somewhere near Nentershausen.