"It's a very difficult track you really have to be a good driver. It's one of the fastest tracks. I've never slid that fast,” she said after her final run.

"Some tracks you don't have to work that hard. Here you have to work, work, work. And until the finish, you don't really feel the speed."

In an interview with NBC, American luger Tony Benshoof said: "when I first got on this track, I thought that somebody was going to kill themselves."

"I don't know what we are going to do, this is very heavy," said Josef Benz, a Swiss bobsledder who competed in two Winter Olympics, and won one gold.

There are only 17 sliding tracks in the entire world. The vision for Whistler was to create one that complimented the three existing ones in North America, not as technical as Lake Placid, but more challenging and faster than Calgary and Salt Lake.

The design firm commissioned to build the Whistler Sliding Center vowed to create the "most challenging" course ever made.

The course features several dangerous segments, including an imposing 152-meter drop, which extended upon the originally planned149 meters.

It's the longest in the world and equivalent to 48 stories. The 1,450-meter course has 16 turns, with the last one a sharp U turn.

Bob Storey, the former Canadian bobsledder who now heads the International Bobsleigh and Skeleton Federation (FIBT), defended the track.

In an interview with Maclean's, he spoke at length about his confidence in the course -- one that was designed to the specifications of the FIBT and the International Luge Federation, and built with their active participation.

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