[aphx]

"Generally accepted" by whom? In General Aviation (think 4-seat "Cessnas" as opposed to commercial/airlines), you are far less likely to be involved in an accident than if you are driving a car. But GA accidents are likely to be much worse than auto accidents.

Auto drivers take the same kind of weather and maintenance risks when trying to conform to a schedule (when is the last time you went over 55mph on the 101 in the rain to catch a flight?). GxP for pilot training and cockpit management implore a "Safety First" approach, but it all still comes down to pilot decision making (which must be distinguished from "licensing rigor").

"Motorcycle with a parachute" is a pretty good way to describe this (although really it's a dune-buggy with a parachute--it has a roll cage and seatbelts). Looks less dangerous than a fixed-wing aircraft for the pilot and passengers (parachute landing at very slow speeds). Certainly less dangerous for the human and other "obstacles." So, low risk to you (less than your neighbor's SUV, for sure).