I don't think I can ever visit Germany without eating a Currywurst at least twice during my stay!! And when it's organic and served out of a beautifully refurbished Airstream caravan it's got to be a winner. I saw this in Cologne during their annual furniture fair and to my surprise Benbergs Benys is run by an old friend. I think if I ever need a career change I might possibly consider getting myself a mobile currywurst stall. The only problem I can see is that I'd probably eat all the stock.
You can find Benbergs Benys from Monday - Friday in Dortmund on Europaplatz.