Snowpiercer (or ASoIaF) to Redline or Tailenders? Either way it's certainly "a long cold winter" to "wheels in the sky" (a ground race on other planets) for sure at least. Truthfully though Doug's power is often not that kind of literal, and the song is not just ticking every box but basically hammering on them as a portal song so it really could be just about anything on either end. As for being a wildcard destination, well, Doug never knows where the portal will take him, so does it really make a difference?
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‎noli esse culus
‎noli esse culus