Really depends on the scale. A very small course, fine, but a large track and the elves may start to get leery about fucking with nature if you're cutting down the forest. They're pretty against heavy industry and are prefer elegeant, non-technological solutions to problems - so train tracks and race courses are right out of the theme.
Curious about me and the characters I play? See the 'Staff' page! See also the rosters for my characters Samus Aran or Enel if you'd like to see examples of well-formatted rosters. Hope you enjoy the Omniverse!