Okay, I admit it: this is pretty cool. It's funny how some ways of lighting up your bike at night come off as dorky and others don't: I think what really appeals to me about this is the way it also indicates when you're slowing down, and does that intuitively, using a visual language that would be (one hopes) totally instinctive.
I would buy this! Even with my blinking tail light and Mike's googly white eyes in front I still worry that I'm invisible at night. Even when I've also got my panniers with their (I know, because I've seen it) blindingly reflective orange patches on the back.
No, I swear, it's *not* the same as getting spinners. Or those purple undercarriage lights people put on their cars. It's not! It's cool!