Been trying to track down a reasonably-priced copy of Outrun 2006 for Xbox, came across this US-Region PC copy that seems to be even more rare! : r/SEGA
OutRun 2006: Coast 2 Coast for PlayStation 2 Reviews - Metacritic
OutRun 2 - Codex Gamicus - Humanity's collective gaming knowledge at your fingertips.
Finally after hunting for months, I finally have Outrun 2006 Coast 2 Coast! : r/originalxbox