During the second ride on my new Vado 4.0 I noticed that the rear light was no longer working. Looking at it closely once I got home saw that the cable which powers the light had been rubbing on the tire and was severed. Since the bike is less than a month old the repairs are under warranty but I can see that if there is sufficient slack on the cable this may happen again. Overall I truly love this bike but see this as a minor design weakness. (The cable is routed in a groove on the underside of the rear fender up to the rack. The issue is that the transition from the fender groove, up through a grommet opening at the top of the fender leaves the cable exposed at that point and very close to the tire.)