Six Flags Plans One-of-a-Kind Coaster

Roller coasters typically have two rails, which can sometimes make for a rickety ride. If that bothers you, a new coaster in the works at Six Flags Fiesta Texas may either delight or terrify you—or perhaps both. The San Antonio park is constructing the Wonder Woman Golden Lasso Coaster, which will be the first single-rail roller coaster that runs on IBox track, reports USA Today.

It will glide along a 15.5-inch-wide steel track, allowing for turns that are both "extremely quick" and "crazy smooth," says a Six Flags engineer, who makes a distinction between the coaster and slow-paced "monorail" systems. The coaster, which will climb a hill 113 feet high and hit 52mph, is due to open next spring. (More Six Flags stories.)