FAQ from the site
Question: Does the AirScooter auto-rotate?
Answer: The AirScooter is designed for the recreational sport flyer and as such does not auto-rotate. The AirScooter is designed for recreational flying at low altitude where even traditional helicopters have little benefit from auto-rotation. Design efforts have been done on a ballistic emergency chute for the AirScooter.
OK so I wonder what altitude would you operate for the chute to be of benefit?