what is the difference between " get in the bus" and " get on the bus" [duplicate]

Possible Duplicate:
Origin/reason for the expression “on the bus” instead of “in the bus”

I want to know when to use " get in the bus." and " get on the bus." I will thank you If you give me the right answer.


Solution 1:

You never get in the bus unless it's a small bus the size of a car; you always get on the bus. But you get in a car not the other way around. I guess, it has to do with the size of these machines.