A strong sense of purpose seems to be a factor in health and longevity. Is it just good fortune that allows some people to develop that sense of purpose, or can it be consciously and effectively nurtured?
On average a passenger mile on a modern jet uses significantly less fuel than driving that same mile.
[0] http://spreadsheets.google.com/ccc?key=0Agol553XfuDZdHlWSmRR...
Average fuel consumption in 2014 was 75 mpg‑US per passenger https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft
747 burns approximately 5 gallons of fuel per mile and holds 568 people. They are over 70% full on average which works out to:
568 x .7+ / 5 ~= 80+ MPG. At the equator the world is 24,901 miles ~= 300 gallons at worst though most most people consider around the world to be US > EU > Asia > US which is shorter than that.
Edit: US average is 75mpg per passenger in 2014 though longer trips are above that. https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft
On the other hand at 3 gallons (which is far from extreme) / day x 48 x 5 = 720 gallons ignoring all other driving.
PS: On top of that for longer trips aircraft tend to take more direct routes. You can't just drive from NY to LA on a strait line which significantly reduces cars effective MPG.