den sure kalkun: Well, this was a tough one. It's been collected in now so I can reveal that the three cars were from Jakob Dannefærds Vej, Trangravsvej, and Drechselsgade.
There was no connection (that I know of) between the three locations; you just had to find it on GE. And it had to be a tough mystery because the final location was on HC Andersens Boulevard, attached to a window bar opposite Glyptotekket. I didn't have permission for the hide from the building owners, and I'm amazed it never got muggled! Because of the location it had to be a nano, and because of the number of potential visitors I didn't want to be changing the log book every four days. So I made an evil cache.
Incidentally, there was no prospect of moving the cache to a different place, even a few metres away. There was a tiny, tiny gap that was 161m from two caches and 163 metres from a third cache and 170m from yet another cache. I was amazed when I discovered the spot was free, and a coordinates change of 00.001 to the north, south, east or west would have put it too close to another cache. As the reviewer put it to me when I submitted the coordinates "Yes - you found the blind spot :-)"
The three spoiler cars formed an equilateral triangle, the centre of which was the cache location. In reality, you only needed to find two of the cars; it would have been a fair guess that the third one would have made a triangle and I would have checked the two possible points that would have made an equilateral triangle.
Thanks for the visits.