I'm looking into a communication system for on the bike, read all the threads, searched ebay, looked at all linked sites, blah blah blah. Anyways, as I was doing so I came across some Nascar communication devices and that made me think... What do Moto GP riders wear to communicate with their teams? Do they not communicate? Do they have specific bar mounted buttons that mean certain things with a coloured leds as a response? (I'm just making stuff up here) Do they wear a headset? I have no bloody idea and figured I'd ask.