80岁的美国作家Bill Sniffin驾驶一辆2018款二手特斯拉Model X完成了近3000英里（约4800公里）的长途旅行，其中约2800英里（约4500公里）由特斯拉FSD辅助驾驶系统完成。Sniffin是怀俄明州Cowboy State Daily的专栏作家，也是资深科技产品尝鲜者。
他购入这辆二手Model X后，从得克萨斯州达拉斯出发，途经爱荷华州再返回怀俄明州，全程近3000英里。旅途中FSD辅助驾驶承担了约2800英里，占比超过93%，剩余约200英里由Sniffin手动驾驶，主要集中在前方车辆稀少的开阔路段，他选择自己享受驾驶乐趣。
长途旅行的充电体验喜忧参半。Sniffin大约每100英里（约160公里）就需要停车充电一次，充至80%通常需要25分钟左右。最惊险的一幕发生在爱荷华州Elkader附近，车辆电量显示归零，距离下一个充电桩仅剩4英里（约6.4公里），续航焦虑直接拉满。所幸最终勉强抵达，没有趴窝在路上。
Sniffin坦言FSD并非万能。在施工路段等复杂路况下，系统表现不够稳定，需要驾驶员时刻保持注意力并随时接管。他还提到Model X上新增的“SLOTH”驾驶模式，该模式偏向温和平顺的自动驾驶风格，适合长途巡航。不过他尚未测试自动泊车和Summon召唤功能，也不确定这辆2018款Model X能否应付怀俄明州严苛的冬季路况。
截至2026年6月，FSD累计行驶里程突破113亿英里，日均约2880万英里。特斯拉2025年第三季度安全报告显示，开启Autopilot的车辆每636万英里发生一次事故，而美国平均水平为每66万英里一次，事故率约为普通驾驶的十分之一。不过FSD也并非零风险，2026年5月特斯拉录得207起涉及L2辅助驾驶系统的事故，创单月新高。
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The 80-year-old American writer Bill Sniffin completed a long-distance journey of nearly 3,000 miles (approximately 4,800 km) by a 2018 second-hand Tesla Model X, of which approximately 2,800 miles (approximately 4,500 km) were completed by the Tesla FSD auxiliary driving system. Sniffin is a columnist for Cowboy State Daily in Wyoming, and is also a taster of advanced technological products.
After buying the second-hand Model X, he left Dallas, Texas, and returned to Wyoming via Iowa, nearly 3,000 miles. The FSD-assisted driver on the journey carried about 2,800 miles, or more than 93 per cent, and the remaining approximately 200 miles were driven manually by Sniffin, mainly in the few open sections of the front, where he chose to enjoy the joy of driving himself.
The experience of charging long distances is mixed. Sniffin requires a parking charge for approximately 100 miles (approximately 160 kilometres) and up to 80 per cent usually takes about 25 minutes. The most dangerous scene occurred near Elkader, Iowa, where vehicle power levels showed zero, leaving only four miles (approximately 6.4 km) from the next charger, and the re-flight anxiety was stretched directly. Fortunately, they arrived at the end, and there were no pegs on the road.
Sniffin confessed that the FSD was not a panacea. In complex road conditions such as the construction section, the system is not stable enough to require the driver to remain vigilant and take over at all times. He also referred to the new “SLOTH” driving model on Model X, which favoured a warm and peaceful self-driving style, suitable for long-distance cruises. However, he has not yet tested the automatic parking and Summon call functions, nor is it certain that this 2018 Model X will cope with the harsh winter road conditions in Wyoming.
By June 2026, the cumulative mileage of the FSD exceeded 11.3 billion miles, averaging approximately 28.8 million miles a day. The Tesla safety report for the third quarter of 2025 shows that Autopiliot was opened with an accident every 6.36 million miles, compared to the United States average of 660,000 miles, with an accident rate of about one tenth of normal driving. However, the FSD was not a zero-risk, and in May 2026 Tesla recorded 207 incidents involving L2-assisted driving systems, up to a single month.
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