Ya not too far. I was in Belgium last year, took the train from Brussels to Rotterdam. I wasn't too happy when I found out how close Antwerp and Rotterdam were.
A one hour drive is too close to Seven for my liking. But what can you do, its a small world
On a more serious note Zach and Seven. Do you guys use English mainly in your jobs or Dutch? also from your experience, how important is fluency in Dutch when working in multinationals in the area?