Thanks. Not sure if that's what I saw (my memory is that their lights didn't flash like these), but this is the first time I saw the lights you linked to. Looks great without needing batteries. However, it may have the same problem as the ones I saw, that is if you mount it on, say, the left side of the wheel, then the cars on your right behind in certain angle would not be able to see the light, which is blocked by the tire.