Germans think air conditioning makes people sick - not because it could be dirty if poorly maintained, but because the chilled air will do... something.
German cars can't be locked with the driver's door open; German apartments can't be unlocked if the door is closed.
German tap water is both palatable and safe to drink; almost everyone drinks bottled water.
In grocery stores, most Germans try to pack the conveyor belt at the checkout as tightly as possible and crowd the next person in line, as if space on the belt isn't a renewable resource.
Being unable to lock the car door while it's open contributed to a German car I owned in the USA being stolen. A family member thought the lock was broken and left it unlocked.
Wouldn’t the door always be closed if it’s locked?
I meant the inverse; if the door is closed, it cannot be opened from the outside without a key. American doors typically have a turnable doorknob on the outside and can be opened without a key unless deliberately locked.