Near the bottom of the screen on the home page of Concord Coach Lines, right after “Online ticketing available” and a little before “Are you looking for a career change?” comes the question “Why would anyone drive?”

In case the query doesn’t sink in, it’s written there twice – the second time in a rambling and jaunty lavender cursive. Make that thrice. Scroll down again, and the website for the bus line that carries passengers from Orono and points south to Boston notes, “Travel by Motorcoach is the greenest way to travel, according to Getting there Greener, a recent study conducted by the Union of Concerned Scientists, comparing energy consumption, ridership (passenger miles), and CO2 emissions for autos, passenger trains, and motorcoaches. Why would anyone drive?”

Why? Because it’s convenient. Or at least most Americans think it is, even when the evidence (sitting in traffic) tells them otherwise. Boston, incidentally, is ranked 11th out of 101 American cities for “total annual delay” in a 2012 Texas A&M University’s Annual Urban Mobility Report; a high ranking here is probably not an honor cities seek.

Convenience is also what makes us so lucky to have this bus, which runs from Portland once an hour every day of the week and delivers passengers to downtown Boston or to Logan airport. In comfort. On time (well, mostly). While the bus driver deals with the traffic, the snow and the stress, you can read. Or play computer Scrabble. Or watch the movie that the bus screens (admittedly, not usually one I’ve wanted to watch). Or simply zone out, all the while feeling smug that you are such a very responsible green, “greenest” apparently, citizen of the world. And once you reach Boston, a beastly place to drive, an even worse one in which to park, you simply disembark and go on your merry way.

Why would anyone drive?