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There certainly used to be some effort to achieve this in Outerra's Anteworld- a full earth simulation. I don't know if it ever got anywhere. There was a Google

There certainly used to be some effort to achieve this in Outerra's Anteworld- a full earth simulation. I don't know if it ever got anywhere. There was a Google Maps overlay you could use to painstakingly add roads in their real locations. I never attempted anything elaborate, but I certainly enjoyed placing my own (non realistic) racing loops around random Scottish Lochs or Tibetan mountains and driving on them at my leisure: http://www.outerra.com http://www.outerra.com

akavel 10y ago
Seems to still be live-ish: http://forum.outerra.com/index.php?topic=3547.0 http://forum.outerra.com/index.php?topic=3547.0 — most recent update apparently in Dec 2016, photos: http://forum.outerra.com/index.php?topic=3547.msg42555#msg42555 http://forum.outerra.com/index.php?topic=3547.msg42555#msg42.... Seems they're starting to support data import from OpenStreetMap, among others. Also, active on Twitter: https://twitter.com/outerradev https://twitter.com/outerradev