Bus drivers are usually the most careful with their occupation, and they should be. They are guarding lives when they work, so they need to be careful with what they do.
This does not mean all drivers are careful but my emphasis is on their job being a careful one. And then we have the last bus driver with problems of his own, bringing family issues to work.
He was distracted from work, always thinking hard even when driving, putting the kids inn the bus at risk. Of course, you know the rest of the story, which is why he is the last bus driver.
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