Why is the Alfa Romeo Giulia taking so long to show up?

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Alfa Romeo’s return to rear-wheel drive is not being so easy as it was supposed to be. According to a report from suppliers to Automotive News, the Giulia has failed to meet internal crash test standards, what has delayed its market introduction. We confess we have not heard any deadlines...
Why is the Alfa Romeo Giulia taking so long to show up?