What exactly is "Other", and why does Germany do it so much more than other countries?
Conquering other countries. More seriously, I can imagine it includes travel to work, which tends to be an epic journey through traffic jams in densely populated countries like Germany, Belgium, the Netherlands.
Germany: 229 p/km^2
US: 32 p/km^2
Netherlands: 1,101 p/km^2
(source: http://en.wikipedia.org/wiki/List_of_sovereign_states_and_de...)