Simple.... They're INVISIBLE! When Porta-Bote is mounted atop a car, it looks just like a surfboard. When on top of an RV (Caravan) you can't see it at all! When Porta-Bote is out on the water, it looks just like a "non-folding" boat. The only time you can be sure you're looking at an honest to goodness Porta-Bote is during the short time it takes to open or close one. Once you own one and know "what it's all about", it's easy to identify Porta-Bote. All of a sudden, you notice them "all over the place".