Six Flags Magic Mountain will add two roller coasters and alter an existing coaster in 2011, bringing the park's total to 18. That gives the Valencia, California, theme park the most roller coasters of any theme park in the world, dethroning Ohio's Cedar Point, which has 17.

The first addition is the Green Lantern, is a spinning coaster on a vertical track. It's the first of its kind in the United States, though the builder, Intamin, has a similar model called the Comet Express at Lotte World in Seoul, South Korea.

The Green Lantern's cars can spin on a vertical axis. The ride starts with a 107-foot lifthill, after which riders will zig-zag through more than 800 feet of track on the way back down. Check out the video at the bottom of this post to see a rendering of the Green Lantern in action. Six Flags says the new roller coaster will debut in the spring.

The second 2011 coaster addition at Six Flags Magic Mountain is an as-yet-unnamed kid's coaster that will be adjacent to the theme park's Bugs Bunny World children's area. It will be 679 feet long with a 28-foot lifthill and top speeds of 21 miles per hour.

Finally, the theme park's Superman: The Escape roller coaster will get its name changed to Superman: Escape from Krypton, along with a pretty major makeover. New cars will allow riders to shoot up the 41-story tower at 100 miles per hour backwards.

The Superman coaster has two tracks. Six Flags says following the ride's alterations, both tracks will operate with the backward-facing cars at first. After a few months, one of the cars will be turned around, allowing riders to choose whether they want to ride forwards or backwards.

Superman's new ride cars will also have lower sides for a more exposed feeling, and new over-the-shoulder harness restraints. Six Flags says the Superman alterations will be completed early next year.

Filed under: North America, United States, Theme Parks