Engine on Global Flyer

They're saying the Global Flyer's jet engine burns 102 pounds of fuel an
hour. If that kind of fuel weighs in at 6 pounds per gallon, that's
about 17 gallons an hour, or roughly double what I burn in the little
Cherokees I fly. Then again, the jet propelled the Flyer about 2 times
as fast with a max weight some 4 times greater (again, compared to a
Cherokee). It seems to me that somebody might by in the market for a
plane with characteristics like that...but am I missing something?

--Brent