The only benefit I could discern,would be gridlock behind a semi which cannot make it through a green traffic light,due to very slow acceleration, after the cars which preceed it, have already cleared the intersection.
I saw this with a Swift rig when I went to meetup with BamZipPow.Perhaps,ten cars,which otherwise would have cleared the intersection, had to wait on at least one more signal light cycle delay before proceeding.
It's a lot of zero-mpgs for the other motorists.
