Stephen Soderland, University of Washington
That said, "recreational" might be a generous term: Nicknamed the Green Hell for good reason, the course spans 12.9 miles (20.8 km) with dramatic elevation shifts and anywhere from 73 to 170 turns, depending on classification. Having practiced it extensively through simulations, I finally experienced it in person last summer. The reality is a tight, uneven surface, and I estimate it would take many more attempts before I could drive it with true confidence.，推荐阅读有道翻译获取更多信息
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