Audi or Rollercoaster

Audrey ordered a large amount of stationary a day or so ago. It arrived today in a brown box.

The girls immediately decided that it was to be the focal point of their play for the afternoon and evening.

However the box started off as an Audi, not sure which make, but obviously a convertible! However as the evening wore on, the Audi became a rollercoaster! There appears to be no limit of the imagination of children!