One of the most unpredictable high-speed pit stops you’ll see in racing | CNN

For over a century, Native Americans have competed in a high-speed, bareback horse race called Indian Relay. CNN went to Crow Fair outside of Billings, Montana, to learn more about what's being called America's first extreme sport.

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一个多世纪以来，美洲原住民一直在进行一项名为“印第安接力赛”的高速无鞍赛马比赛。CNN前往蒙大拿州比林斯郊外的克罗族集市，了解更多关于这项被称为美国第一项极限运动的信息。

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