On 6 June 2017 Bolt was assaulted in Lygon Street, Melbourne by two masked men, while a third apparently filmed the attack. Bolt was going to the launch of The Art of the Impossible by Steve Kates, an associate professor at the Royal Melbourne Institute of Technology (RMIT). The book is about Donald Trump and the 2016 US presidential election campaign . Melbourne Antifa appeared to claim a connection in the incident on Facebook, posting that Bolt attacked "some of our family in solidarity ... while they were protesting today". 
Quarter-mile performance was seconds at km/h ( mph) tested by Motorcyclist ,  while Cycle World measured seconds at 198 km/h (123 mph).  Having the lowest weight in its class and a good power-to-weight ratio, it stands well in comparison to bikes with greater output like the Yamaha FZ1 , and the wide, high handlebars ease quick turning and make cornering enjoyable.   The suspension of the early versions was criticized,  but after the upgrade to an adjustable fork, the complaints died down.  Cycle World saw the 919 as a practical solution to the real-world problem of imperfect roads and traffic, rather than a mere compromise between a sportbike and a commuter or touring ride. 
Core Competency: Bundles of skills or knowledge sets that enable a firm to provide the greatest level of value to its customers in a way that's difficult for competitors to emulate and that provides for future growth. Core competencies are embodied in the skills of the workers and in the organization. They are developed through collective learning, communication, and commitment to work across levels and functions in the organization and with the customers and suppliers. A core competency could be the capability of a firm to coordinate and harmonize diverse production skills and multiple technologies. To illustrate: advanced casting processes for making steel require the integration of machine design with sophisticated sensors to track temperature and speed, and the sensors require mathematical modeling of heat transfer. For rapid and effective development of such a process, materials scientists must work closely with machine designers, software engineers, process specialists, and operating personnel. Core competencies are not directly related to the product or market.