When I think of Germany I think of preparedness for every reasonable eventuality, so this news is not surprising to me.
The only car I have ever owned that included instructions on how to pull start it (by towing it with another vehicle) in the manual was a German car. And on its face, not a bad little tidbit of information, but what made is REALLY unusual is that the car had an automatic transmission. You were meant to get going maybe 25 mph in neutral and then drop the gear shift down to the second gear indicator.
Having 10 days of food on hand just sounds second nature in a country where they pull start cars with automatic transmissions.