The Rail Runner Mountain Coaster is in the final stage of testing at Anakeesta in Gatlinburg.
The single-rail ride is scheduled to open in August.
Guests can ride single or tandem in the yellow cars. You determine the speed by controlling a hand brake.
Anakeesta offers outdoor adventure for the whole family. Visitors ride the Chondola to the top then shop, dine and experience the mountains on a tree canopy walk, ziplines, tree house playground, and a new mountain coaster.