A section of a <a href="https://en.wikipedia.org/wiki/Portable_building" class="extiw" title="w:Portable building">demountable building</a> on a <a href="https://en.wikipedia.org/wiki/Semi-trailer_truck" class="extiw" title="w:Semi-trailer truck">prime mover</a>.
<a href="//commons.wikimedia.org/wiki/User:Bidgee" title="User:Bidgee">Bidgee</a>
CC BY-SA 2.5 au
<span class="int-own-work" lang="en">Own work</span>