The CristalBubble is just the tip of the iceberg. Dumas developed a full range of eco friendly luxury portable accommodations including what he refers to as the Bubbltree. A unique version of the CristalBubble developed to be situated on top of a tree – just like a tree house but with a 360 degree view of the surrounding area (including an option to fold the plastic cover). the Bubbltree is a bit more complicated to install and less "portable" as it requires stairs and a fixed floor, unlike the CristalBubble.
Video showing designer Pierre Stephane Dumas and the CristalBubble (French)