oh look, ok, fine, they’re driving something twice the size of a greyhound bus, but with computers and guidance systems that are light years beyond the typical greyhound bus driver’s technical kit. They’re also driving a practical sardine can full of people paying bottom dollar to get from point A to point B, and often you don’t even get to see the damn pilot, they’re too ascared to come out of their super secure compartment.

And if you have any doubts of any of this, I have a link too: http://wiki.answers.com/Q/How_much_does_a_Greyhound_bus_weigh