Stuttgart21 is also extremely late, over budget, and controversial enough that it's considered a reason why the Greens won city council in Stuttgart, marking th

Stuttgart21 is also extremely late, over budget, and controversial enough that it's considered a reason why the Greens won city council in Stuttgart, marking their first ever majority council in a major German city. In Cologne a tunnel collapsed during construction, killing two people: https://en.wikipedia.org/wiki/Cologne_Stadtbahn#Tunnel_collapse_and_delays https://en.wikipedia.org/wiki/Cologne_Stadtbahn#Tunnel_colla...