A sign on the climb from Salem, Oregon to the Redmond/Bend area indicates that no gas or services exist for the next 52 miles. It’s worth heeding, since the route goes over mountain passes, and in winter can require tire chains and sometimes long passages behind a snow plow. Range anxiety happens even for those of us still plugging along in fossil-fueled vehicles. One of the ostensible advantages of Solar Impulse’s ability to charge itself, is that it has an endless supply of solar fuel and its batteries can make it through the night – depending on the relative lengths of day and night. Making the longest flight of the round-the-world trip at high latitudes and during summer months was well planned, subject only to obstacles presented by weather. Even those impediments were handled brilliantly by the team’s meteorologists and mission director. What couldn’t be foreseen and must have caused moments when Andre’ Borschberg’s discipline, yoga and powers of meditation …