So much for a little boy

Teacher: Why are you late?
Boy: My travel time was stretched because of the rain.
Teacher: You should have started a little earlier since you know it has been raining.
Boy: I did indeed start much earlier mam.
Teacher: You are still late! so tell me, how do you commute to school?
Boy: Usually by car but today since it's raining, I took a bus.
Teacher: How stupid? you could have well came in your car.
Boy: Mam, but that would further congest traffic and cause further delay to so many others like me.
Teacher: In that case, you still weren't on time?
Boy: Mam, I'm afraid that others didn't think it the way I did.