The word, vardos is commonly associated with the Romanis, or Gypsy of history. My understanding is that the era of the horse-drawn Gypsy wagon was quite short but the image carries on.
Many houses are built with salvaged materials and many houses are meant to blend with the surroundings. Quite often green building practices are paramount in the larger plan. There houses built into rock, on the water, in a cliff, and parked in friend's back yards.
Maybe one day we will have our own small house with a shop on a plot of land for goats.