CFI A&P
Exploring the world one toilet at a time.
If you want to freak out non-pilots, just tell them that you can fly an airplane over almost the entire country without a flight plan, clearance or communications, at any time. Just get in and go. Exceptions being busier airports, MOAs, coastal defense zones and a few executive areas. They think that everybody should be in the system at all times, under positive control, discrete frequency assigned, talking to ATC.
Non-pilots are completely dumbfounded when I explain that a flight can be made from the Miami area to the Seattle area without using a radio. Or from NY to FL (done it several times) without radio communication. It's fun though.