But you would see that immediately when you plugged in after the trip. You would plug in and you would see the lights start flashing in sequence on the dashboard instead of light 1 lighting up. "Oh, that's right, my charging timer is on because it's a weekday!" Hit the timer override button on the dash and you're in business.
But when you parked your car in the driveway that morning the sun was shining directly on the windshield, so you couldn't see the LEDs. Hey, it's my scenario right?
But I'm sure you see my point, that the state of the LEDs at any given time don't tell you the whole story. There is additional state information (like what the LEDs were doing when you plugged in the charger) that is needed for getting the whole picture and, in my opinion, that is bad design.
Coincidentally, just today I signed up for a free online class on Human Computer Interaction. http://www.hci-class.com (and no, I didn't start this thread to plug the course).