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Six Flags announced today that Wonder Woman Golden Lasso Coaster will open next spring at its Fiesta Texas location in San Antonio. The park says the new attraction won’t look or behave like any thrill machine that preceded it. That’s because instead of riding a set of two rails like traditional coasters, its narrow trains would soar along one 15.5-inch-wide steel track. It will be the world’s first single-rail coaster.

“I expect it to be crazy smooth,” says Larry Chickola, Six Flags VP and chief corporate engineer. “And crazy fun. There will be extremely quick twists and turns – quicker and smoother than regular coasters.”

Before settling on “single-rail” to describe the new genre of ride, the engineer referred to it as a “monorail” coaster. But Chickola said the designation might conjure thoughts of the slow and poky vehicles used to transport passengers at airports and elsewhere. Wonder Woman, he insists, will be the opposite of poky: a “high-thrill and edgy experience.” Above all, however, he emphasizes that it should be velvety smooth.

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Six Flags’ Wonder Woman Golden Lasso coaster is coming to Texas. According to Six Flags, it’s the world’s first single rail coaster featuring a 90-degree drop and 3 inversions.
USA TODAY

Why is Chickola forecasting a super-smooth ride? Traditional wooden coasters are known for knocking passengers around. Their rickety, rough-and-tumble ride experience is part of their charm. Steel-tracked coasters can mitigate some of the roughness, but even they have an inherent problem: Because they ride on two rails, the slightest misalignment between the left and right sides can result in moments of roughness. With Wonder Woman’s single rail, nothing could get out of sync.

The coaster will be “visually stunning,” says Jeffrey Siebert, president of Six Flags Fiesta Texas. It will be set against the multi-hued quarry wall that surrounds the park. Visitors may be surprised when they first encounter the ride. “It’s just going to look wrong, but in a nice way,” Siebert adds. Instead of a wooden coaster’s lattice-like timber structure, Wonder Woman will have steel…