 This will make DART the fourth transit agency in Texas to use Stadler DMUs, after orders for the Denton County Transportation Authority A-train, Capital MetroRail in Austin, and TEXRail.An additional segment of the Cotton Belt corridor has been labeled for future expansion.Although no planning has occurred, it would extend the route from Shiloh Road in Plano to Wylie, with stations in the downtowns of Murphy and Wylie.