Hogwarts Express

[jemnilla28]

No: HPFGUIDX 97552

Since reading CoS, when Ron and Harry ride Mr. Weasley's car to 
Hogwarts after missing the train, I have had a thought about the 
Hogwarts Express.

Is there any way that students are required to ride the train because 
there is some type of magic done to them while on their way to school?
(I mean, one that kind of "debriefs" the kids from the "real" 
world...) Before you flame me, please consider my reasons why.

1 - Harry and Ron are nearly expelled upon their arrival to Hogwarts 
(I realize that one reason for this is because they were seen in the 
air by Muggles.)

2 - After McGonagall gave them their detentions, they were forced to 
remain in her office and eat sandwiches during the feast. Why not 
just send them to the meal (despite McGonagall's stated reasons for 
doing so) unless there was some sort of magic involved?

3- Students who live north of London (and possibly near Hogwarts) 
still have to go to London and take that train. 

Just a thought..