Not sure if this would be too much programming effort. But going to the first station to adjust schedules is a bit janky. I think you should be able to adjust car schedules by having an additional tab in the car design window as well. It is just so easy to build new cars and then forget to schedule them until an hour later and 100 cars produced, you see none of your new cars have made it through the line.
Or there could be a warning message, “You’ve created a new car model but have not scheduled it’s production”. Having either one of these would be extremely helpful for new players, and would help us seasoned players remember, because we’re just not accustomed to clicking on stations much.