BikeHud - Augmented Reality Heads-up Display for your Motorcycle Helmet Very effective, headsup display system - for full details please check out their website - Home - Bike HUD: Sat Nav, Safety Cameras & more in one unit - you really need to have a look to understand all the features and possibilities of this sytem. You may well be a little sceptical at first, but it really does work well. Installation is fairly straightforward if you are confident connecting wires with scotchlock type connectors (or soldering). I did it myself and I am no auto-electrician! - The guys at BikeHud are more than happy to help with advice and guidance or I believe, offer an installation service for a fee. This sytem also includes the wifi dongle that allows use GPS Sat Nav (i think that the app is currently only available for Apple - Android is 'on the way') Current retail price for all this on their website is £446.40 - I'm looking for offers around £175 posted