想請教一篇介紹文的翻譯，請問有神人幫我解答嗎?

原文出處
http://winterheart-zombieboy.blogspot.tw/2012/07/domagoj-dukec-one-of-worlds-greatest.html

從
How Citroën C5 Mark II was created?

C5 class is dominated by Germans. It’s a three volume car because management insisted on that and for Citroën two volumes are characteristic. It was difficult to create car with that volume that will be recognised as Citroën. We had to make elegant car with good proportions and soft lines. For instance it was easier to create C6 because volume is typical for Citroën. On C5 every element is functional which is rare quality. Just compare it with Audi where shapes often don’t have function. You cannot just draw a car out of your head and say we’ll produce it. Car has to meet market needs and demands, marketing goals and thousand of other factors.




Why did you left Citroën?

There are many reasons. For last twelve years I lived abroad and I just wanted to get back to Germany where I was born. Second, in Citroën I reached my top so I could only repeat myself which I didn’t want to do. I just decided to move on and find new challenge. Also, in Citroën I reached top design position, afterwards I could only become manager which means that I would just be running from one meeting to other instead of actually designing. I wanted to continue my career through design positions like director of exterior design or studio director and those positions don’t exist in Citroën.

google的翻譯為
雪鐵龍C5 Mark II的如何？

C5級主要是由德國。這是一個三個卷車因為管理層堅持和雪鐵龍兩個卷的特點。這是很難創建與該卷將被確認為雪鐵龍汽車。我們不得不做出 優雅的汽車具有良好的比例和軟線。比如，它更容易創建，因為卷是典型的為雪鐵龍C6。C5上的每一個元素是功能，這是不可多得的精品。只要比較它與奧迪的形狀往往不具備的功能。你不能只是畫一輛車，你的頭，說我們會產生。汽車，以滿足市場的需要和要求，營銷目標和千其他因素，你為什麼要離開雪鐵龍 的原因有很多。對於最後的12年，我在國外生活，我只是想拿回德國我出生的地方。其次，雪鐵龍，我達到了我的頂，所以我只能重複自己，我不想做。我決定繼續前進，並找到了新的挑戰。此外，雪鐵龍，我達到了頂尖的設計位置，後來我只能成為管理者意味著我會僅僅運行一次會議，其他，而不是實際的設計。我想繼續我的職業生涯中，通過主任外觀設計工作室主任，這些職位中不存在雪鐵龍的設計位置，如。



裡面...volume car是什麼意思?我想應該不是卷的意思...正確的專業用法是什麼呢?謝謝