When you get on the 392 to Parramatta, how do you know the driver has a Commercial Vehicle Medical? How do you know the driver has a current license?
When I walk into a flying school and ask to do a joy flight, how do I know the pilot has a current class 1 medical, had an AFR, and has completed 3 take-off's and landings in the last 90 days? How woul I even know to ask, let alone even have the faintest idea what all the above was.