I have a passion for fast cars. To drive them means pure joy to me.

When I arrive at our training ground at Borussia Dortmund, everybody could hear just that a few seconds before I can actually be seen. Everybody knows it's me. I love to hear the machine working.

I was always sure the Bundesliga was the right choice for me. My first season was solid, if unspectacular, so maybe I would have preferred it not to be so hard at the beginning, but I've worked very hard to get to this point and want to get even better now.

Few years ago I did 30m in 3.7 seconds. Whether that makes me quicker than [Usain] Bolt, I don't know! We all know Usain is the best.

We have our ambitions [in Dortmund Borussia], and of course I would love to win some titles after some years of finishing second or losing finals.

I want to score goals in every match, as many as possible.

The fans of Borussia Dortmund are truly amazing. It is hard to describe what you feel when you play in front of them, the atmosphere they create not only on the yellow wall with its 25000-something fans jumping up and down a full 90-plus minutes of every game, no matter the score or the opponent.