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JIMinFL wrote:
Greyhound bus should be on the list. Don't ya think.


From a fuel consumption/passenger mile standpoint, a fully loaded
Greyhound Bus hast to be one of the most efficient vehicles on the
road. If the GHB gets 5 mpg (just a guess) but has 100 people aboard
that's the same efficiency as each one of those people driving a single
occupancy vehicle and realizing 500 miles/ gallon.

There's no question you're right in principle, but numbers need adjustment.
Even fully loaded the bus probably holds only about 45-50, and the average
load is probably not over 35. Even so, that would rough out to about 175
person-miles/gallon.