How long does it take to ...

This interesting list of options popped up on Google when I began a search query with "How long does it take to ...":

• boil an egg
• get to the moon
• get a passport
• digest food
• get pregnant
• get to mars
• walk a mile
• bake a potato
• hard boil an egg
• buy a house

As it happens, none of those items coincided with my own query, but I thought it was a particularly odd list. Not what I would have expected.