I think that this song is about a bus driver's relationship with a reglular commuter. For some reason, the commuter no longer takes his bus. The relationship never evolved to be anything of substance, so the driver is looking back on the time spent with the commuter; comparing them to the onther, angier commuters and longing for them to take the bus again. The driver regrets never telling the commuter their feelings. "My chance to say something seemed so frequent--it was, and now I know I had plenty of time".
I think that this song is about a bus driver's relationship with a reglular commuter. For some reason, the commuter no longer takes his bus. The relationship never evolved to be anything of substance, so the driver is looking back on the time spent with the commuter; comparing them to the onther, angier commuters and longing for them to take the bus again. The driver regrets never telling the commuter their feelings. "My chance to say something seemed so frequent--it was, and now I know I had plenty of time".