Communication.......Good One

Arab son sends an e-mail to his Dad saying:
Dear Dad,
Berlin is wonderful, people are nice and I really like it here,
but Dad,  I am bit ashamed to arrive to my college with my Gold Mercedes, when all my Teachers travel by train.
Your Son
Nasser

Sometime later Nasser gets reply to his e-mail from his Dad:
Loving son,
Twenty Million Dollars transferred to your account, please stop embarrassing us, go and get yourself a train too.
Your Dad