The former Real Madrid midfielder, who joined Arsenal in a £43million summer move, is currently on international duty as he and his team-mates prepare for Friday night's World Cup qualifier against the Republic of Ireland.
He said: "Driving on the left-hand side. I thought it would be much more difficult than it really is. But Per Mertesacker gave me some 'driving lessons' and they helped me, so I can drive there.
"London is an interesting city to live in. I have grown to love the place in a short space of time.
"The guys in the Arsenal team and the coaching staff are fully behind me. They have given me great responsibility and that's what I feel great about."
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