Pure Gold Ferrari 599 GTB

An Arab student 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 a bit ashamed to arrive at my college with my pure-gold Ferrari 599GTB when all my teachers and many fellow students travel by train.


Your son,
Nasser

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The next day, Nasser gets a reply to his e-mail from his dad:


My dear loving son,
Twenty million US Dollar has just been transferred to your account.
Please stop embarrassing us.  Go and get yourself a train too.
Love, your Dad