Derka Derka

After giving the new car time to say good bye to its corporate headquarters, we headed out in search of a German registration tag.

In Germany, drivers must pay an environmental tax if they want to motor about in the city.

To show you've paid the tax, you better have a green sticker on your dash.

That's when our mad dash began to find Derka. It's like a Shell station, Mobile station or Sohio station where your vehicle's emotions are tested. A cleaner burning car, the lesser the tax.

With the sticker on the dash, our wings are no longer clipped.