NASCAR fans (and in case you haven’t noticed, there are a few of them in the Carolinas) automatically know what this headline means: caution. When the yellow flag comes out, it indicates that something is wrong and everyone on the track needs to ease up and wait to go full throttle until that issue is cleared up. Recently, Roush Fenway Racing waved the yellow flag on their own solar array, and I got the opportunity to help get them get back on track. (more…)