Anyone tried one of these....http://www.ebay.co.uk/itm/Go-Cruise-Universal-Motorcycle-Cruise-Control-YAMAHA-/330588441447?pt=UK_Motorcycle_Parts&hash=item4cf89b4b67 Looks less intrusive than traditional crampbuster.
got too close to the car in front it would also put the brakes on for you to maintain a safe distance.
Can't see BMW using that in their cars